Catalogue description THE PAPERS OF CHARLES ALFRED COULSON, F.R.S. (1910 - 1974)

SECTION A. BIOGRAPHICAL AND PERSONAL

Introductory note to Section A

Note on 'Travel arrangements', Boxes CSAC 60.4.78/A.5 - CSAC 60.4.78/A.11

SECTION B. SCIENTIFIC WORKING PAPERS, LECTURES, PUBLICATIONS

Introductory note to Section B

SECTION C. CORRESPONDENCE

Introductory note to Sections C and G

Note on Shorter correspondence, Boxes CSAC 60.4.78/C.23 - CSAC 60.4.78/C.38

Note on Miscellaneous correspondence, Boxes CSAC 60.4.78/C.39 - CSAC 60.4.78/C.44

SECTION D. RELIGIOUS, HUMANITARIAN, PACIFIST WRITINGS

Introductory note to Section D.

SECTION E. SCIENTIFIC COMMITTEES, SOCIETIES, JOURNALS, CONFERENCES

Introductory note to Section E

SECTION F. RELIGIOUS, HUMANITARIAN, PACIFIST ORGANISATIONS

Introductory note to Section F

Index to organisations in Section F

SECTION G. CORRESPONDENCE

Introductory note to Section G

SECTION H. OXFORD UNIVERSITY

Introductory note to Section H

An account of CAC's scientific achievements, particularly in relation to molecular structure and bonding, is given in the Memoir by S.L. Altmann and E.J. Bowen FRS (Biographical Memoirs of Fellows of the Royal Society, 20, 1974, 73-134) to which reference should be made and a copy of which is included in CSAC 60.4.78/A.14.2. Mention is made there also of his 'many-sided' life, but only a study of the manuscript collection is likely to convey the actual work-load he undertook or the charge of energy and dedication which he brought to it. Similarly, his 'legendary' correspondence is referred to in several published tributes, as is the concluding episode when, learning that his illness was terminal, he signed eighty letters, many of which he typed himself, in the three days before his death to leave his life in order; but it is only when these letters take their place in the folders at the end of a lifetime's correspondence and friendship, or to close a newly-projected line of research, that their poignancy is realised.

From his first academic appointment at Dundee in 1938, CAC attached the greatest importance to fostering or creating research schools, and as his international reputation grew his Summer Schools, Rencontres and other meetings developed into increasingly major undertakings of widely-attended renown, while he was under constant pressure to accept research students and colleagues on sabbatical from all over the world. His successive departments were prolific in publications and in students who continued to spread his methods and influence. The care he showed for them extended to material details of housing, schooling, and finance as well as to supervision of research and subsequent career. The paternalism of the guidance which he gave reflects the 'family' atmosphere he deliberately created through informal coffee gatherings, Christmas parties, summer picnics, reunions, anniversary celebrations and similar activities designed to foster a sense of community.

This 'group' activity almost certainly derives from his particular pursuit of the religious life, and can already be seen strongly at work in CAC's years at Cambridge 1928 - 38, in which he organised meetings, Sunday schools, summer camps, fellowship sessions and the like for friends from city, country and university circles. From the same years also date his pacifism (which he put into practice in the Second World War) and his many humanitarian interests such as care for the unemployed or the refugees of the 1930s. The extent to which these concerns continued and proliferated in later years can be seen in the collection, though it is less easy to realise at first sight now deliberately he mingled 'science' and 'religion' in his life and how interfused they are in all his dealings.

It might seem from the above that CAC was overly idealistic; but this is not the case. Though he was besieged by calls to lend his time, his name or his support to countless causes, many seemingly worthy, he by no means accepted them all; the many letters in which he explains his decision to decline such appeals are carefully reasoned, kind and helpful, but illuminating in their revelation of his sharp eye for ill-conceived, specious or uncandid proposals. Even so, he was prodigal in the causes he undertook and the energy he expended; the unpublished talks, sermons and contributions in the collection would, if brought together, double the official bibliography of 444 items. Major writing or lecturing commitments were preceded by a culling of material - quotations, press-cuttings, statistics, etc., many annotated - which has its own interest in providing a tour d'horizon of a topic at a particular time.

The working papers, calculations and correspondence, particularly in Section B, help to provide a picture of the development of theoretical chemistry as a subject of scientific research and as an academic discipline with which CAC was closely involved from about 1930 until his death in 1974. CAC was himself aware also of the importance of lecture notes and drafts as a source of historical information on teaching methods, curriculum development and the spread of new ideas from the frontiers of research through the various strata of the education system; hence his preservation of his notes taken as an undergraduate and graduate at Cambridge University (A.19.8) and his retention and updating of his own lectures and talks.

In many respects, the correspondence remains the feature of the most lasting interest. The range and number of CAC's correspondents may indeed be guessed from a glance at the general index, but the brobdignagian size and disparate content of his daily postbag can best be gauged from the folders of 'shorter' exchanges where the random chance of alphabetical order has thrown together correspondence of every level of discourse and opinion. CAC's replies never cease to astonish, while being instantly recognisable. It could truly be said that he never wrote a routine letter. His distinctive style, present from the earliest years, rests on a syntax designed to convey the quality of the speaking voice; it reflects an unwearied patience, integrity and unfailing concern with the welfare of his interlocutors, be they eminent colleagues, members of a congregation or unknown persons from the general public. He touched countless lives, and never without effect.

Titles or descriptions in inverted commas are those which appear on the folders or documents, either in CAC's hand or in those of Mrs. Coulson and her advisers who looked through the material after his death.

The documents are too numerous to be individually itemised or calendared, but an account of the contents of each folder is given which it is hoped will suffice to furnish adequate guidance to its substance.

ABBREVIATIONS

Publications which are listed in the Bibliography of the Royal Society Memoir by S.L. Altmann and E.J. Bowen are referred to in the form R.S. ... placed at the end of the relevant entry or entries.

The only other abbreviation used in CAC, which Coulson himself always employed when referring in the third person to his own writings or activities.

CORRESPONDENCE

Two Sections of the collection, C and G, are devoted entirely to correspondence. Each is further sub-divided as follows:

Boxes CSAC 60.4.78/C.1 - CSAC 60.4.78/C.22 and CSAC 60.4.78/G.1 - CSAC 60.4.78/G.21: individually named folders of correspondents with whom CAC had frequent and extensive exchanges and relations; these folders are all listed, dated and indexed. See introductory note on pp.134-135, 242.

Boxes CSAC 60.4.78/C.23 - CSAC 60.4.78/C.38: 'miscellaneous folders' of shorter correspondence in which more than one correspondent is included; these folders are listed and indexed. See introductory note on p.154.

Boxes CSAC 60.4.78/C.39 - CSAC 60.4.78/C.44: brief exchanges of letters, scientific and personal, not indexed.

All other Sections also contain correspondence, much of it extensive, or of interest. This has been noted in the handlist, and the names of the correspondents appear in the general index.

From about 1930, CAC almost always typed his letters and kept carbon copies. Many of these copies, in all Sections of the collection, were made on the backs of incoming letters, invitations, drafts and the like. Although many of these are of interest in themselves, it has not been possible to make a note of such cases or to index the individuals or organisations concerned.

The catalogue of the Coulson papers has been a collective labour and we are very grateful to the following individuals:

to Mrs. E. Coulson, Miss R. Schwerdt, Dr. R.B. Mallion, Dr. W.E. Duncanson and Dr. S.L. Altmann for their initial work in ordering the papers and for information and advice during the later stages of preparing the handlist for publication;

to the Department of Western Manuscripts of the Bodleian Library for making available space in the stack in which to work on the collection and for advice on its arrangements and presentation;

to Mrs. M.M. Edwards for careful and accurate typing, and immense patience with successive drafts and emendations of the handlist.

LOCATIONS OF OTHER MATERIAL

Bradford University

Peace Studies Library: books, periodicals and pamphlets from CAC's library.

Cambridge University

University Library: CAC's notes on lectures attended as undergraduate and graduate (see A. 19.8).

Wesley House: CAC's papers relating to the 'Cambridge Group' movement.

London University

Audiovisual Centre: two videotapes of lecture 'What happens to an electron in a molecule?'

King's College Library: a comprehensive collection of books on Science and Religion, separately housed as 'the Coulson Collection'.

Open University

Tape of lecture 'Making Models. What is applied mathematics all about?' (see B. 10.6)

Oxford University

Bodleian Library: (1) addenda to main collection (restricted to 2004, including information about individuals and organisations, and family letters).

(2) CAC's correspondence with W. Hume-Rothery (CSAC 1/73, Items 132, 132a, 133, 133a).

(3) collection of CAC's publications.

Mathematical Institute: photographs of CAC and scientific books from CAC's library.

Radcliffe Science Library: scientific books from CAC's library.

Theoretical Chemistry Department: photographs of CAC, scientific books from CAC's library and collection of CAC's publications.

Wadham College Library: scientific books from CAC's library.

Royal Society, London

Collection of CAC's publications.

Coulson, Charles Alfred, 1910-1974, scientist

NOTE: All requests for access to the papers should be addressed in the first instance to the Keeper of Western Manuscripts, Bodleian Library, Oxford.

The papers were received from Mrs. Eileen Coulson (widow) who had assembled them from CAC's Department, his study at home and other sources.

Reproduced by permission from Biographical Memoirs of Fellows of the Royal Society, 20, 1974, 116-134

[1] 1931 Geostrophic winds. Quart. J. R. Met. Soc. 57, 161.

[2] 1935 The electronic structure of H3+;. Proc. Camb. Phil. Soc. 31, 244.

[3] 1936 (With D. E. LEA & R. B. HAINES) The mechanism of the bactericidal action of radioactive radiations. I, Theoretical; II, Experimental, alpha and beta particles. Proc. R. Soc. Lond. B 120, 47.

[4] 1937 (With D. E. LEA & R. B. HAINES) The action of radiations on bacteria. III, [gamma]-Rays on growing and on non-proliferating bacteria. Proc. R. Soc. Lond. B 123, 1.

[5] The electronic structure of methane. Trans. Faraday Soc. 33, 388.

[6] The evaluation of certain integrals occurring in studies of molecular structure. Proc. Camb. Phil. Soc. 33, 104.

[7] A note on the criterion of maximum overlapping of wave functions. Proc. Camb. Phil. Soc. 33, 111.

[8] The energy and screening constants of the hydrogen molecule. Trans. Faraday Soc. 33, 1479.

[9] 1938 The electronic structure of some polyenes and aromatic molecules. IV, The nature of the links of certain free radicals. Proc. R. Soc. Lond. A 164, 383.

[10] (With W. E. DUNCANSON) Comparison of wave-functions for HeH+; +; and HeH+;. Proc. R.Soc. Lond. A 165, 90.

[11] Self-consistent field for molecular hydrogen. Proc. Camb. Phil. Soc. 34, 204.

[12] 1939 The electronic structure of some polyenes and aromatic molecules. VII, Bonds of fractional order by the molecular orbital method. Proc. R. Soc. Lond. A 169, 413.

[13] (With J. E. LENNARD-JONES) The structure and energies of some hydrocarbon molecules. Trans. Faraday Soc. 35, 811.

[14] 1939 The lengths of the links of unsaturated hydrocarbon molecules. J. Chem. Phys. 7, 1069.

[15] (With G. S. RUSHBROOKE) On the interpretation of atomic distribution curves for liquids. Phys. Rev. 56, 1216.

[16] 1940 (With D. H. EVERETT) On the calculation of ionic heat capacities in solution. Trans. Faraday Soc. 36, 633.

[17] (With G. S. RUSHBROOKE) The thermodynamic derivation of Langmuir's isotherm. Proc. Camb. Phil. Soc. 36, 248.

[18] (With G. S. RUSHBROOKE) Note on the method of molecular orbitals. Proc. Camb. Phil. Soc. 36, 193.

[19] On the calculation of the energy in unsaturated hydrocarbon molecules. Proc. Camb. Phil. Soc. 36, 201.

[20] The charge distribution and dipole moment of the C--H bond. Proc. Camb. Phil. Soc. 36, 509.

[21] 1941 Waves, University Mathematical Texts. Edinburgh & London: Oliver & Boyd. First edition, 1941; second edition, 1943; third edition, 1944; fourth edition, 1947; fifth edition, 1949; sixth edition, 1952; seventh edition, 1955; reprinted, 1958, 1961, 1965.

[22] The van der Waals force between a proton and a hydrogen atom. Proc. R. Soc. Edinb. A 61, 20.

[23] Momentum distribution in molecular systems. I, The single bond. Proc. Camb. Phil. Soc. 37, 55.

[24] (With W. E. DUNCANSON) Momentum distribution in molecular systems. II, Carbon and the C--H bond. Proc. Camb. Phil. Soc. 37, 67.

[25] Momentum distribution in molecular systems. III, Bonds of higher order. Proc. Camb. Phil. Soc. 37, 74.

[26] Quantum theory of the chemical bond. Proc. R. Soc. Edinb. A 61, 115.

[27] (With W. E. DUNCANSON) Momentum distribution in molecular systems. V, Momentum distribution and the shape of the Compton line for CH4, C2H4, C2H4 and C2H2. Proc. Camb. Phil. Soc. 37, 406.

[28] 1942 (With W. E. DUNCANSON) Momentum distribution in molecular systems. VI, Shape of the Compton line for methane CH4. Proc. Camb. Phil. Soc. 38, 100.

[29] Diamagnetic susceptibility of methane. Proc. Phys. Soc. 54, 51.

[30] Two-centre integrals occurring in the theory of molecular structure. Proc. Camb. Phil. Soc. 38, 210.

[31] The dipole moment of the C--H bond. Trans. Faraday Soc. 38, 433.

[32] Structure of 'diphenylene'. Nature, Lond. 150, 577.

[33] (With W. E. DUNCANSON) Some new values for the exponential integral. Phil. Mag. 33, 754.

[34] 1943 (With W. E. DUNCANSON) Molecular wave functions for lithium. Proc. R. Soc. A 181, 378.

[35] 1944 (With W. E. DUNCANSON) Atomic wave functions for ground states of elements Li to Ne. Proc. R. Soc. Edinb. A 62, 37.

[36] Structure of coronene. Nature, Lond. 154, 797.

[37] 1945 (With R. P. BELL) Kinetic energy, potential energy and force in molecule formation. Trans. Faraday Soc. 41, 141.

[38] Some difficulties in teaching the D method in linear differential equations. Math. Gaz. 29, 200.

[39] (With W. E. DUNCANSON) Theoretical shape of the Compton profile for atoms from H to Ne. Proc. Phys. Soc. 57, 190.

[40] 1946 (With G. S. RUSHBROOKE) On the motion of a Gaussian wave-packet in a parabolic potential field. Proc. Camb. Phil. Soc. 42, 286.

[41] 1946 Bond fixation in compounds containing the carbonyl group. Trans. Faraday Soc. 42, 106.

[42] Electron transfer reactions. Discussion. Trans. Faraday Soc. 42, 124.

[43 & 44] (Two communications in General Discussion on bond number and peroxides.) Trans. Faraday Soc. 42, 265.

[45] (With H. C. LONGUET-HIGGINS) A theoretical study of the Mills-Nixon effect. Trans. Faraday Soc. 42, 756.

[46] 1947 Energy bands in graphite. Nature, Lond. 159, 265.

[47] (With P. DAUDEL & R. DAUDEL) Comparaison entre les deux méthodes de construction de diagrammes moléculaires. Rev. sci., Paris 85, 29.

[48] The meaning of resonance in quantum chemistry. Endeavour 6, 42.

[49] Representation of simple molecules by molecular orbitals. Quart. Rev. Chem. Soc. Lond. 1, 144.

[50] (With H. C. LONGUET-HIGGINS) A theoretical investigation of the distribution of electrons in some heterocyclic molecules containing nitrogen. Trans. Faraday Soc. 43, 87.

[51] (With J. DUCHESNE & C. MANNEBACK) Interaction terms in molecular vibrations. Nature, Lond. 160, 793.

[52] (With H. C. LONGUET-HIGGINS) The electronic structure of conjugated systems. I, General theory. Proc. R. Soc. Lond. A 191, 39.

[53] Note on the random-walk problem, Proc. Camb. Phil. Soc. 43, 583.

[54] (With H. C. LONGUET-HIGGINS) The electronic structure of conjugated systems. II, Unsaturated hydrocarbons and their hetero-derivatives. Proc. R. Soc. Lond. A 192, 16.

[55] (With H. C. LONGUET-HIGGINS) Développements récents de la théorie de la réactivité des molecules possédant des doubles liaisons conjuguées. Rev. sci., Paris 85, 929.

[56] (With W. E. MOFFITT) Strain in non-tetrahedral carbon atoms. J. Chem. Phys. 15, 151.

[57] (With W. E. MOFFITT) Position of nodes in atomic wave functions. Phil. Mag. 38, 634.

[58] (With BUU-HOI, P. DAUDEL, R. DAUDEL, M. MARTIN, A. PULLMAN & B. PULLMAN) Études des propriétés physiques et chimiques des polyphényls á noyaux rapprochés ou séparés. Rev. sci., Paris 85, 1041.

[59] (With M. J. S. DEWAR) Difficulties in the application of molecular orbital theory to mesomeric ions. Disc. Faraday Soc. no. 2, 54.

[60] (With J. JACOBS) Free valence in triphenylmethyls. Disc. Faraday Soc. no. 2, 67.

[61] Introductory survey--the theory of free radicals. The theory of the structure of free radicals. Disc. Faraday Soc. no. 2, 7-8, 9-18.

[62] (With D. P. CRAIG, A. MACCOLL & A. PULLMAN) p-Quinodimethane and its diradical. Disc. Faraday Soc. no. 2, 36.

[63] 1948 (With J. T. COX, A. G. OGSTON & J. ST L. PHILPOT) A rapid method for determining diffusion constants in solution. Proc. R. Soc. Lond. A 192, 382.

[64] (With W. E. DUNCANSON) Electron momenta in atoms. Proc. Phys. Soc. 60, 175.

[65] Excited electronic levels in conjugated molecules. I, Long wavelength ultra-violet absorption of naphthalene, anthracene and homologs. Proc. Phys. Soc. 60, 257.

[66] (With W. E. MOFFITT) The electronic structure and bond lengths of coronene and pyrene. Proc. Phys. Soc. 60, 309.

[67] (With G. S. RUSHBROOKE) Notes on the molecular orbital treatment of linearly coupled systems. Proc. Camb. Phil. Soc. 44, 272.

[68] 1948 (With G. BERTHIER, H. H. GREENWOOD & A. PULLMAN) Structure électronique des hydrocarbures aromatiques à 4 noyaux benzéniques accolés. Étude par la méthode des orbitales moléculaires. C. R. Acad. Sci., Paris 226, 1906.

[69] Wave mechanics in physics, chemistry and biology. (Inaugural Lecture, King's College, London, 2 March 1948.) Science Progress, no. 143, 436.

[70] (With M. BRADBURN & G. S. RUSHBROOKE) Graphite crystals and crystallites. I, Binding energies in small crystal layers. Proc. R. Soc. Edinb. A 62, 336.

[71] (With G. S. RUSHBROOKE) Graphite crystals and crystallites. II, Energies of mobile electrons in crystallites infinite in one direction. Proc. R. Soc. Edinb. A 62, 350.

[72] (With C. M. GILLAM) The Van der Waals force between a proton and a hydrogen atom. II, Excited states. Proc. R. Soc. Edinb. A 62, 360.

[73] (With R. McWEENY) Quantum mechanics of the anharmonic oscillator. Proc. Camb. Phil. Soc. 44, 413.

[74] (With D. P. CRAIG & A. MACCOLL) Electronic structure of fulvene. Proc. Phys. Soc. 61, 22.

[75 & 76] (With H. C. LONGUET-HIGGINS) The electronic structure of conjugated systems. III, Bond orders in unsaturated molecules; IV, Force constants and interaction constants in unsaturated hydrocarbons. Proc. R. Soc. Lond. A 193, 447.

[77] (With J. DUCHESNE & C. MANNEBACK) Interpretation of cross-terms in the potential function of polyatomic molecules. In: Victor Henri memorial volume, Contribution à l'Étude de la structure moléculaire, pp. 33-46. Liège: Desoer.

[78] The atomic radius of carbon. In: Victor Henri memorial volume, Contribution à l'étude de la structure moléculaire, pp. 15-31. Liège: Desoer.

[79] (With W. E. MOFFITT) The free radicals CH2(CH)2m& subhyp;1CH2. Trans. Faraday Soc. 44, 81.

[80] (With H. C. LONGUET-HIGGINS) The electronic structure of conjugated systems. V, The interaction of two conjugated systems. Proc. R. Soc. Lond, A 195, 188.

[81] Electricity, University Mathematical Texts. Edinburgh & London: Oliver & Boyd. First published, 1948; second edition, 1951; third edition, 1953; fourth edition, 1956; fifth edition, 1958, reprinted, 1961; reprinted (with corrections), 1965.

[82] (With P. DAUDEL & R. DAUDEL) Comparaison des deux méthodes de construction des diagrammes moléculaires.--Cas des molécules substituées ou hétéroatomique. Bull. Soc. chim. Fr. 15, 1181.

[83] Free valence in organic reactions. J. Chim. phys. 45, 243.

[84] (With V. A. CRAWFORD) The dimerisation of acenaphthylene. J. Chem. Soc. 1990.

[85] 1949 (With W. E. MOFFITT) The properties of certain strained hydrocarbons. Phil. Mag. 40, 1.

[86] (With H. C. LONGUET-HIGGINS) The electronic structure of some azaderivatives of naphthalene, anthracene, and phenanthrene. J. Chem. Soc. 971.

[87] (With I. FISCHER) Notes on the molecular orbital treatment of the hydrogen molecule. Phil. Mag. 40, 386, and also in Molecular orbital theory: an introductory lecture note and reprint volume. (Ed. C. J. Ballhausen & H. B. Gray.) New York & Amsterdam: W. A. Benjamin, Inc., 1964.

[88] (With J. JACOBS) Charge distribution and bond orders in aminostilbene and related molecules. J. Chem. Soc. 1983.

[89] 1949 (With R. McWEENY) The computation of wave functions in momentum space. I, The helium atom. Proc. Phys. Soc. 62, 509.

[90] Liaisons localisées et non localisées. J. Chim. phys. 46, 198.

[91] (With J. JACOBS) Conjugation across a single bond. J. Chem. Soc. 2805.

[92] (With H. C. LONGUET-HIGGINS) Notes on the validity and application of the method of molecular orbitals, Phil. Mag. 40, 1172.

[93] La forme et la nature des liaisons chimiques. Université de Paris, Conférence faite au Palais de la Découverte, 25 March 1949.

[94] (With W. E. DUNCANSON) Atomic binding energies. Nature, Lond. 164, 1003.

[95] (With D. E. LEA) The distribution of the numbers of mutants in bacterial populations. J. Genet. 49, 264.

[96] Notes on the secular determinant in molecular orbital theory, Proc. Camb. Phil. Soc. 46, 202.

[97] 1950 (With B. H. CHIRGWIN) The electronic structure of conjugated systems. VI. Proc. R. Soc. Lond. A 201, 196.

[98] (With N. H. MARCH) Momenta in atoms using the Thomas-Fermi method. Proc. Phys. Soc. 63, 367.

[99] The addition of osmium tetroxide to dinaphthylethylenes. J. Chem. Soc. 2252.

[100] The Christian religion and contemporary science. The modern churchman, 40, September 1950.

[101] Optical investigations in molecular and in cell structure. Nature, Lond. 166, 803.

[102] (With G. R. BALDOCK) On conditions for the existence of surface states. Disc. Faraday Soc. no. 8, 27.

[103] Significant progress and present problems. (Introductory paper in Faraday Society Discussion on electronic spectra.) Disc. Faraday Soc. no. 9, 1.

[104] 1951 The place of science as a cohesive force in modern society. Dublin Review 225, 49.

[105] (With J. JACOBS) Electronic levels in simple conjugated systems. II, Butadiene. Proc. R. Soc. Lond. A 206, 287.

[106] (With D. P. CRAIG & J. JACOBS) Electronic levels in simple conjugated systems. III. The significance of configuration interaction. Proc. R. Soc. Lond. A 206, 297.

[107] Some reflections on the significance of the new cosmology. Lecture delivered on behalf of the Institute of Christian Education at the Conference of Educational Associations, London, 29 December 1950.

[108] (With M. P. BARNETT) The evaluation of integrals occurring in the theory of molecular structure. I and II. Phil. Trans. R. Soc. Lond. A 243, 221.

[109] Critical survey of the method of ionic homopolar resonance. Proc. R. Soc. Lond. A 207, 63.

[110] Bond lengths in conjugated molecules: the present position. Proc. R. Soc. Lond. A 207, 91.

[111] Some recent theories of chemical reactivity. Research, Lond. 4, 307.

[112] (With R. DAUDEL and J. M. ROBERTSON) Bond lengths in naphthalene and anthracene. Proc. R. Soc. Lond. A 207, 306.

[113] (With F. H. BURKITT & H. C. LONGUET-HIGGINS) Free valence in unsaturated hydrocarbons. Trans. Faraday Soc. 47, 553.

[114] (With J. DE HEER) Additivity rules for approximating resonance energies in certain hydroquinones and quinones. I,. The conjugation of OH groups to alternant hydrocarbons and related topics. Trans. Faraday Soc. 47, 681.

[115] 1951 The place of science in the Christian faith. Church Pastoral-aid Society Fellowship Paper, 13, December 1951.

[116] (With P. W. HIGGS & N. H. MARCH) Theoretical determination of electron density in organic molecules. Nature, Lond. 168, 1039.

[117] (With I. T. RAMSEY) Science and religion. (B.B.C. broadcast discussion, 15 January 1951.) Church Pastoral-aid Society Fellowship Paper, 13, May-June 1951.

[118] 1952 What is a chemical bond? Sci. J. R. Coll. Sci. 21, 1.

[119] (With J. DE HEER) Conjugation of a hetero-atom across a single bond. J. Chem. Soc. 483.

[120] (With A. MACCOLL & L. E. SUTTON) The polarizability of molecules in strong electric fields. Trans. Faraday Soc. 48, 106.

[121] Factors affecting the bond lengths in conjugated and aromatic molecules. J. Phys. Chem. 56, 311.

[122] (With S. L. ALTMANN) Compressional energy and resonance energy. Trans. Faraday Soc. 48, 293.

[123] (With N. H. MARCH and S. ALTMANN) [pi]-Electrons and [sigma]-electrons. Proc. Nat. Acad. Sci., Wash. 38, 372.

[124] (With R. TAYLOR) Studies in graphite and related compounds. I, Electronic band structure in graphite. Proc. Phys. Soc. 65, 815.

[125] (With W. E. DUNCANSON) Studies in graphite and related compounds. II, Momentum distribution in graphite. Proc. Phys. Soc. 65, 825.

[126] (With R. TAYLOR) Studies in graphite and related compounds. III, Electronic band structure in boron nitride. Proc. Phys. Soc. 65, 834.

[127] (With P. L. DAVIES) Long range forces between large chain molecules. Trans. Faraday Soc. 48, 777.

[128] Alkyl shifts in absorption spectra of azulene and other aromatic molecules. Proc. Phys. Soc. 65, 933.

[129] Quantum theory, theory of molecular structure and valence. Ann. Rev. Phys. Chem. 3, 1.

[130] Atomic energy: the moral issue. In: Biological hazards of atomic energy, being the papers read at the Conference convened by the Institute of Biology and the Atomic Scientists Association, October 1950 (ed. A. Haddow), pp. 215-219. Oxford: Clarendon Press.

[131] (With M. P. BARNETT) The evaluation of unit molecular integrals. In: Conference on Quantum-mechanical methods in valence theory (Shelter Island, N.Y., 8-10 September 1951), pp. 237-271. Washington: Office of Naval Research.

[132] (With M. P. BARNETT) Some comments on the methods for evaluating molecular integrals. In: Conference on Quantum-mechanical methods in valence theory (Shelter Island, N.Y., 8-10 September 1951), pp. 212-217. Washington: Office of Naval Research.

[133] (With P. L. DAVIES) Long range forces between large molecules. I, Chain molecules. In: Conference on Quantum-mechanical methods in valence theory (Shelter Island, N.Y., 8-10 September 1951), pp. 91-107. Washington: Office of Naval Research.

[134] Valence. Oxford: Clarendon Press, first edition, 1952, reprinted four times; 2nd edition, 1961, London: Oxford University Press, reprinted (with corrections) 1963, 1965; (with further corrections) 1969.

[135] The unity of science and faith. In: Christianity in an age of science, pp. 41-49. Toronto: Canadian Broadcasting Corporation.

[136] Rotation around the Ph--Ph bond in diphenyl. In: Conference on Quantum-mechanical methods in valence theory (Shelter Island, N.Y., 8-10 September 1951), p. 42. Washington: Office of Naval Research.

[137] 1952 Two notes on the concept of bond order. In: Conference on Quantum-mechanical methods in valence theory (Shelter Island, N.Y., 8-10 September 1951), p. 66. Washington: Office of Naval Research.

[138] (Discussion of paper by G. W. Wheland and S. L. Matlow.) In: Conference on Quantum-mechanical methods in valence theory (Shelter Island, N.Y., 8-10 September 1951), p. 41. Washington: Office of Naval Research.

[139] God the Creator. (Address given to the British Conference of Christian Youth, Bangor, August 1951.) C.E.Y.C. Newsletter, no. 1. London: Church of England Youth Council.

[140] 1953 The spirit of applied mathematics. (Inaugural lecture delivered before the University of Oxford, 28 October 1952.) Oxford: Clarendon Press.

[141] Electronic configuration and carcinogenesis. Advanc. Cancer Res. I, 1.

[142] Contributions of science to peace. (Alex Wood Memorial Lecture, 1953.) London: Fellowship of Reconciliation.

[143] (With C. M. MOSER) Molecular-orbital calculations for Clar's hydrocarbon 1:13:12-6:16:7-dibenzonaphthacene (zethrene). J. Chem. Soc. 1341.

[144] (With V. A. CRAWFORD) Hyperconjugation. I, Conjugation and hyper-conjugation energies. J. Chem. Soc. 2052.

[145] The longing for truth. Question 6, 26.

[146] Free-electron wave functions for conjugated molecules. Proc. Phys. Soc. 66, 652.

[147] Christianity in an Age of Science. Riddell Memorial Lectures. London: Oxford University Press.

[148] 1954 Note on the applicability of the free-electron network model to metals. Proc. Phys. Soc. 67, 608.

[149] The way to God through science. In: Ways to God (addresses given in the Home Service of the B.B.C.), pp. 16-19. Reading: The Layman Publishing Co.

[150] The use and abuse of science. The Preacher's Quarterly, 1, 30.

[151] (With R. DAUDEL) Dictionary of values of molecular constants. Cyclostyled version. Mathematical Institute, Oxford, and Centre de Mécanique Ondulatoire Appliquée, Paris.

[152] (With C. M. MOSER & M. P. BARNETT) Molecular-orbital calculations for Clar's hydrocarbon 1:13:12-6:16:7-dibenzonaphthacene (zethrene). II, The Diels-Alder reaction. J. Chem. Soc. 3108.

[153] The calculation of resonance and localisation energies in aromatic molecules. J. Chem. Soc. 3111.

[154] (With U. DANIELSSON) Ionic and covalent contributions to the hydrogen bond. I. Ark. Fys. 8, 239.

[155] (With U. DANIELSSON) Ionic and covalent contributions to the hydrogen bond. II. Ark. Fys. 8, 245.

[156] Electronic band structure of solids. Nature, Lond. 174, 949.

[157] Sir John Lennard-Jones, K.B.E., F.R.S. (obituary notice). Nature, Lond. 174, 994.

[158] Science and religion. Advanc. Sci., Lond. 11, 321.

[159] Sur une relation d'Odiot et Daudel entre la densité électronique et le potentiel électrique autour d'un atome. C. R. Acad. Sci. Paris 239, 868.

[160] Present tendencies in the theory of large molecules. symposium on molecular physics at Nikko, 1953, pp. 23-33.

[161] A new approach to the theory of electrons in solids. Proceedings of the international conference of theoretical physics, Kyoto and Tokyo, September 1953, pp. 629-639.

[162] Contribution in: Symposium on the morality of atomic warfare. Atomic Scientists' Journal 4, 7.

[163] 1955 Science and religion. Main Currents in Modern Thought, 11, 103. (Condensed from 158.)

[164] Science and religion--a changing relationship. (Rede Lecture for 1954.) Cambridge University Press.

[165] Science and Christian belief. (The John Calvin McNair Lectures for 1954.) London: Oxford University Press; Chapel Hill: University of North Carolina Press; also London: Collins Fontana Books, 1958.

[166] Methyl affinities of aromatic compounds. J. Chem. Soc. 1435.

[167] The contributions of wave mechanics to chemistry. (Tilden Lecture, 1951.) J. Chem. Soc. 2069.

[168] (With S. SENENT) Approximate potential function for the out-of-plane vibrations of ethylene, and of aromatic molecules such as benzene and naphthalene. J. Chem. Soc. 1813.

[169] (With S. SENENT) Molecular deformation in 3:4-5:6-dibenzophenanthrene. J. Chem. Soc. 1819.

[170] Wave-mechanical theory. In: Determination of organic structures by physical methods (ed. E. A. Braude & F. C. Nachod), chap. 16. pp. 727-757. New York: Academic Press.

[171] (With L. E. ORGEL, W. TAYLOR & J. WEISS) The structure and ultraviolet spectrum of dianthracene. J. Chem. Soc. 2961.

[172] Douglas Lea--physicist into biologist. (Fourth Douglas Lea Memorial Lecture, 1954.) Brit. J. Radiol. (Röntg. Soc. Sect.) 28, 474.

[173] The free-electron network model for metals. II. Proc. Phys. Soc. 68, 1129.

[174] (With G. R. LESTER) Some consequences of orthogonalization in molecular-orbital theory. Trans. Faraday Soc. 51, 1605.

[175] Contribution to Faraday Society Discussion on microwave and radio frequency spectroscopy. Disc. Faraday Soc. no. 19, 65.

[176] Contribution to Faraday Society Discussion on microwave and radio frequency spectroscopy. Disc. Faraday Soc. no. 19, 177.

[177] 1956 The scientific method and human relations. The Manager 24, 69.

[178] (With N. H. MARCH) Molecules with tetrahedral and octahedral symmetry. IV, A modified Thomas-Fermi scheme for molecules with heavy atoms in the outer positions. Proc. Camb. Phil. Soc. 52, 114.

[179] The stability of H2+ and OH=;¹=; in aqueous solutions. J. Chem. Soc. 778.

[180] Science as part of our culture. J. Assoc. Assistant Mistresses 7, 25.

[181] Science, religion and education. In: Addresses delivered at the Young School-masters' Conference, St Peter's Hall, Oxford in January 1955. (Privately circulated from Bryanston School.)

[182] The natural sciences. In: An approach to Christian education (ed. Rupert E. Davies), pp. 41-57. London: Epworth Press.

[183] (With M. J. KEARSLEY and E. T. STEWART) Vacancy colour centres in diamond with reference to the Goeppert-Mayer-Sklar approximation. Texas J. Sci. 8, 161.

[184] Case history in hell. The Preacher's Quarterly 2, 41.

[185] Teaching of quantum mechanics to chemists. Advanc. Sci., Lond. 12, 523.

[186] (With S. SENENT & M. A. HERRAEZ) Nota previa acerca del tratamiento teórico de la deformacion molecular en los hidrocarburos aromáticos apiñados. An. Soc. esp. Fis. Quim. B 52, 515.

[187] (With G. R. LESTER) Possible f-orbital hybridization in uranyl and related complexes. J. Chem. Soc. 3650.

[188] (With A. D. BUCKINGHAM and J. T. LEWIS) The quadrupole moment of a hydrogen atom in a uniform field. Proc. Phys. Soc. A 69, 639.

[189] (With NORAH V. COHAN) Orbital following and lone pair electrons in the ammonia molecule. Trans. Faraday Soc. 52, 1163.

[190] 1956 (With M. J. STEPHEN) The quadrupole polarizability of the hydrogen atom. Proc. Phys. Soc. A 69, 777.

[191] Living in an atomic age. Birmingham Teachers Journal 8, 13.

[192] Nuclear knowledge and Christian responsibility. Lake Junaluska, N.C.: World Methodist Council.

[193] (With P. B. SHERRY) The vibrational frequency distribution of graphite. I, Out-of-plane modes of a single layer. Proc. Phys. Soc. B 69, 1326.

[194] 1957 (With M. J. STEPHEN) The calculation of some infra-red intensities. Trans. Faraday Soc. 53, 272.

[195] Nuclear knowledge and Christian responsibility. (Reprint of 192.) Youth 9, 3.

[196] (With L. BURNELLE) Bond dipole moments in water and ammonia. Trans. Faraday Soc. 53, 403.

[197] The hydrogen bond--a review of the present position. Research Panel Paper 28, British Gelatine and Glue Research Association. (Also 199.)

[198] (With NORAH V. COHAN & J. B. JAMIESON) [pi]-Electron polarizabilities of some condensed aromatic molecules. Trans. Faraday Soc. 53, 582.

[199] The hydrogen bond--a review of the present position. Research 10, 149.

[200] (With S. L. ALTMANN & W. HUME-ROTHERY) On the relation between bond hybrids and the metallic structures. Proc. R. Soc. Lond. A 240, 145.

[201] The age of nuclear power. Ordnance 41, 978.

[202] Issue of Bulletin of Bristol Council of Christian Churches giving the substance of lecture given at Central Hall, Bristol, on 30 May 1957 on the issues raised by the hydrogen bomb tests. Bristol: Bristol Council of Christian Churches.

[203] Science and the preacher. In: The preacher's handbook (ed. Greville P. Lewis), pp. 1-11. London: Epworth Press.

[204] The Christian and the atom. The New Christian Advocate, pp. 42-46. (Condensed from 192.)

[205] The atomic age and Christian responsibility. The Presbyterian Leader (South Africa), July 1957, pp. 107-110 (Reprint in condensed form of 192).

[206] Scientific development and Christianity. Focus (magazine of Church of St Thomas-the-Martyr, Bristol) 2, no. 3 and no. 4.

[207] The atomic age and Christian responsibility. World Christian Digest, no. 97, 5-11; no. 98, 32-39, (Condensed from 192.)

[208] Science and religion. St Martin's Review (St Martin-in-the-Fields, London), no. 797, pp. 237-240; no. 798, pp. 269-272; no. 799, pp. 300-304.

[209] Some problems of the atomic age. (Second Scott Lidgett Memorial Lecture, Bristol, 26 March 1957.) London: Epworth Press.

[210] (With V. W. MASLEN) Electronic atom and bond populations in unsaturated molecules. J. Chem. Soc. 4041.

[211] (With MARY J. KEARSLEY) Colour centres in irradiated diamonds. I. Proc. R. Soc. Lond. A 241, 433.

[212] (With J. DUCHESNE) La molécule N2O4 et un nouveau type de liaison chimique. Bull. Acad. Beig. Cl. Sci. 43, 522.

[213] Science and Christianity. World Christian Digest, November 1957, no. 103, 1.

[214] 1958 Nuclear knowledge and Christian responsibilities. Foundery Pamphlets, no. 9. London: Epworth Press.

[215] (With M. P. BARNETT & F. W. BIRSS) Electron-electron separation in molecular hydrogen. Molecular Physics 1, 44.

[216] (With P. D. ROBINSON) Wave functions for the hydrogen atom in spheroidal coordinates. I, The derivation and properties of the functions. Proc. Phys. Soc. 71, 815.

[217] 1958 Science and the idea of God. (Eleventh Arthur Stanley Eddington Memorial Lecture, 21 April 1958.) Cambridge: University Press.

[218] The fundamentals of conjugation in ring systems. Chemical Society Special Publication, no. 12, 85-106.

[219] The age of the universe. In: English. Selected Readings, vol. I, pp. 242-256. Chicago: University of Chicago Press. (Reprinted from the Anchor Review. Garden City, N.Y.: Doubleday Anchor Books, 1955.)

[220] The modern world and the Gospel of Christ. In: God's Good News, pp. 97-112. Washington: Methodist Evangelistic Materials.

[221] God the Creator. In: Steps to Christian understanding (ed. R. J. W. Bevan), pp. 50-70. Oxford University Press.

[222] The dependence of electronic energy levels upon deformation in aromatic hydrocarbons. In: Steric effects in conjugated systems (ed. G. W. Gray), pp. 8-21. London: Butterworths Scientific Publications.

[223] (With R. D. BROWN) Les effects des solvants sur les spectres d'absorption électroniques. In: Calcul des fonctions d'onde moléculaire, pp. 311-327. Paris: Colloques Internationaux du Centre Nationale de la Recherche Scientifique, no. 82.

[224] The modern world and the gospel of Christ. The New Christian Advocate, December 1958, p. 68.

[225] Steps to Christian unity. In: God the Creator (ed. R. J. W. Bevan), pp. 50-71. Oxford University Press.

[226] (With L. J. SCHAAD & L. BURNELLE) Benzene to graphite--the change in electronic energy levels. Proceedings of 1957 Conference on Carbon, pp. 27-35. London: Pergarnon Press.

[227] 1959 Some theoretical considerations about vibrational band intensities. In: Proceedings of the Conference on Molecular Spectroscopy, pp. 183-204. London: Pegamon Press. Also Spectrachim. Acta, 14, 161.

[228] Science and technology in the twentieth century. In: Report of Conference of Science Teachers, Oxford, July 1959. University of Oxford Institute of Education.

[229] (With M. ASGAR ALI) Overcrowding distortions in aromatic molecules and crystals. J. Chem. Soc. 1558.

[230] The hydrogen bond. Loughborough Colleges' Chemical and Chemical Engineering Society Journal, 3, 38.

[231] The hydrogen bond. In: Proceedings of the Symposium on hydrogen bonding, p. 339. London: Pergamon Press.

[232] Dreissig Jahre Quantenchemie. Öst. Chem. Ztg. 60, 153.

[233] Some recent developments in science and their implications to theology. The London Quarterly and Holborn Review, July 1959, p. 176.

[234] The changing relationship of science and religion. The London Quarterly and Holborn Review, October 1959, p. 280.

[235] The age of the universe. In: Writing prose-techniques and purposes (ed. Thomas S. Kane & Leonard J. Peters). New York: Oxford University Press. (Reprinted from 219.)

[236] Finding God in science. Tennessee: The Upper Room.

[237] Life or death. In: A new age for peace, p. 40. London: Fellowship of Reconciliation.

[238] Life in a test tube--so what? Youth, July-August, pp. 5-8.

[239] The modern world and the Gospel of Christ. The Methodist Layman 19, 2.

[240] Molecular geometry and steric deformation. In: Theoretical organic chemistry, paper presented to the Kekulé Symposium, London, 1958. London: Butterworths Scientific Publications.

[241] Fact and fiction in physics. Bull. Malayan Math. Soc. 6, 61.

[242] 1959. Likes and dislikes in mathematics. Bull. Malayan Math. Soc. 6, 29.

[243] The variation method: a chapter in applied mathematics. Bull. Malayan Math. Soc. 6, 1.

[244] Mathematics and the real world. Bull. Malayan Math. Soc. 6, 81.

[245] (With D. STOCKER) Steric forces in halogen-substituted benzenes. Mol. Phys. 2, 397.

[246] Some problems of the atomic age. London Churchman 11, 5.

[247] 1960 Thirty years of quantum chemistry. I, J. Kumasi College of Technology, no. 2, June 1960, p. 11.

[248] Christ confronts our age--the 'age of science'. In: Prophets for our world (sermons at St Aldate's, Oxford), pp. 69-79. London: Mowbray.

[249] Theoretical considerations of the effects of the medium upon molecular energy levels. Proc. R. Soc. Land. A 255, 69.

[250] Fact and fiction in physics. Bucknell Review 9, 1.

[251] Present state of molecular structure calculations. Rev. Mod. Phys. 32, 170.

[252] (With M. A. ALI) On the stability of substituted diphenylenes. Tetrahedron 10, 41.

[253] The electronic structure of the boundary atoms of a graphite layer. Proceedings of the 4th Conference on Carbon, pp.215-219. Oxford: Pergamon Press.

[254] Science, technology and the Christian. (The Beckly Social Service Lecture, 1960.) London: Epworth Press.

[255] As a scientist I am sure that life must go on. In: Is there a life after death ?, pp. 19-26. Worcester: Arthur James.

[256] (With A. GOLEBIEWSKI) Molecular deformation in cycloöctadecanonaene. Tetrahedron 11, 125.

[257] (With A. GOLEBIEWSKI) Out-of-plane co-ordinates for the vibrations of planar aromatic molecules. J. Chem. Soc. 4948.

[258] 1961 (With M. COHEN) Single-centre expansions for the hydrogen molecular ion. Proc. Camb. Phil. Soc. 57, 96.

[259] (With M. A. ALI) Properties of Hafner's new heptalene and pentalene derivatives. Mol. Phys. 4, 65.

[260] Protestant thought and natural science. A review article on 'Protestant thought and natural science', by John Dillenberger (New York: Double-day). The Drew Gateway 31, 107.

[261] (With G. L. CALDOW) Lower-bound energies and the virial theorem in wave mechanics. Proc. Camb. Phil. Soc. 57, 341.

[262] (With J. M. HAMMERSLEY) The bottleneck in British science and technology. New Scientist 10, 499. (Reprinted in The Australasian Engineer, November 1961, p. 81.)

[263] Science tells us--how much ? London: National Society, S.P.C.K.

[264] Bond lengths in the cyclo-octatetraene dianion C8H8--. Tetrahedron 12. 193.

[265] The electronic spectra of [pi]-electron molecules. Photoelectric Spectrometry Gp Bull. no. 13, 358.

[266] (With L. J. SCHAAD) On the approximation of zero differential overlap. J. Chem. Phys. 35, 294.

[267] (With J. O. HIRSCHFELDER) Hypervirial theorems applied to molecular quantum mechanics. WIS-AEC-31, Series 3, 2 October 1961. University of Wisconsin Theoretical Chemistry Laboratory.

[268] (With MAX T. ROGERS) Homopolar dipole. J. Chem. Phys. 35, 593.

[269] (With T. ANNO) The structure of graphite. Proc. R. Soc. Lond. A 264, 165.

[270] Science and religion. Crane Review (Crane Theological School, Tufts University) 4, 32.

[271] 1961 (With A. H. NEILSON) Electron correlation in the ground state of helium. Proc. Phys. Soc. 78, 831.

[272] The Methodist doctrine of perfect love. Proceedings of 10th World Methodist Conference, Oslo (ed. E. Benson Perkins & Elmer T. Clark), pp. 281-285. London: Epworth Press.

[273] (With A. GOLEBIEWSKI) On perturbation calculations for the [pi]-electrons and their application to bond length reconsiderations in aromatic hydrocarbons. Proc. Phys. Soc. 78, 1310.

[274] (With J. JORTNER) Environmental effects on atomic energy levels. Mol. Phys. 4, 451.

[275] 1962 (With J. T. LEWIS) Chemical binding. In: Quantum theory, vol. II: Aggregates of particles (ed. D. R. Bates), pp. 185-246. New York & London: Academic Press.

[276] (With G. L. CALDOW) Bond energies of halogen molecules. Trans. Faraday Soc. 58, 633.

[277] (With J. O. HIRSCHFELDER) Hypervirial theorems applied to molecular quantum mechanics. J. Chem. Phys. 36, 941.

[278] (With A. GOLEBIEWSKI) The Jahn-Teller effect in aromatic ions and radicals. Mol. Phys. 5, 71.

[279] (With C. S. SHARMA) Correction for self-interaction in the Thomas-Fermi potential with application to f electrons in atoms. Proc. Phys. Soc. 79, 920.

[280] (With W. T. DIXON) Bond lengths in cyclic polyenes C2nH2n. A re-examination from the valence-bond point of view. Tetrahedron 17, 215.

[281] (With P. N. SKANCKE) Some abnormally long carbon-carbon bonds. J. Chem. Soc. 2775.

[282] (With C. S. SHARMA) Hartree-Fock and correlation energies for 1s2s ³S and ¹S states of helium-like ions. Proc. Phys. Soc. 80, 81.

[283] (With T. H. GOODWIN) Bent bonds in cycloalkanes. J. Chem. Soc. 2851.

[284] (With K. ZALEWSKI) Internal conversion and the crossing of molecular potential energy surfaces. Proc. R. Soc. Lond. A 268, 437.

[285] Interatomic forces: Maxwell to Schrödinger. Nature, Lond. 195, 744.

[286] (With H. L. STRAUSS) Static Jahn-Teller distortions in the small molecules: CH4=;¹=;, CF4=;¹=;, NH4=;¹=; (excited state) and NH3 (excited state). Proc. R. Soc. Lond. A 269, 443.

[287] (With L. B. RÈDEI & D. STOCKER) The electronic properties of tetrahedral intermetallic compounds. I, Charge distribution. Proc. R. Soc. Lond. A 270, 357.

[288] (With A. C. HURLEY) Comment on 'Hellmann-Feynman wave functions'. J. Chem. Phys. 37, 448.

[289] The Church in the world. (Peter Ainslie Memorial Lecture. Grahamstown: Rhodes University.

[290] 1963 (With C. S. SHARMA) A reconsideration of the split-p-orbital (s.p.o.) method in molecular-orbital theory. Proc. R. Soc. Lond. A 272, 1.

[291] Forces between non-bonded atoms. Industrie Chimique Belge, no. 2, 149.

[292] (With R. J. S. CROSSLEY) Glockler's equation for ionization potentials and electron affinities. Proc. Phys. Soc. 81, 211.

[293] (With C. W. HAIGH) Theoretical calculation of steric effects in conjugated systems. I, Phenanthrene, triphenylene and chrysene. Tetrahedron 19, 527.

[294] The hydrogen bond. Chimia 17, 95.

[295] (With T. H. GOODWIN) Bent bonds in cycloalkanes: a correction. J. Chem. Soc. 3161.

[296] 1963 Contributions to the discussion on the structure of electronically-excited species in the gas-phase. Disc. Faraday Soc. 35, 214, 217, 218, 221, 224, 226 and 232.

[297] (With A. H. NEILSON) Angular correlation diagrams for AH2-type molecules. Disc. Faraday Soc. no. 35, 71.

[298] Mathematics and the real world. Calcutta Mathematical Society Golden Jubilee Commemoration Volume 1958-9, p. 261.

[299] (With M. A. HERRAEZ, M. LEAL, E. SANTOS & S. SENENT) Formation energy of vacancies in graphite crystals. Proc. R. Soc. Lond. A 274, 461.

[300] (With D. EISENBERG) Energy of formation of D-defects in ice. Nature, Lond. 199, 368.

[301] (With C. ZAULI) The K[alpha] transition in compounds of sulphur. Mol. Phys. 6, 525.

[302] Interatomic forces. In: Clerk Maxwell and modern science, pp. 43-69. London: University of London Athlone Press.

[303] Thirty years of quantum chemistry. Kumasitech. Journal, no. 3, 10, May. (Second part.)

[304] (With J. G. STAMPER) Rydberg levels in CH2 and CH3. Mol. Phys. 6, 609.

[305] A secular world ?--God and 'things'. Laity--the Church and the secular world, no. 16, p. 31, November.

[306] Tamil translation of Science tells us--how much ? (1961: 263).

[307] (With D. CLARKSON & T. H. GOODWIN) Valency-bond studies of some conjugated hydrocarbons. I, Penney-Dirac bond orders; general theory and applications to 1,3-butadiene and fulvene. Tetrahedron 19, 2153.

[308] Bond angles in nitrogen-containing heterocyclic molecules. J. Chem. Soc. 5893.

[309] (With P. C. DEN BOER, D. H. W. DEN BOER & T. H. GOODWIN) Valency-bond studies of some conjugated hydrocarbons. II, Pentalene, and some preliminary results on heptalene. Tetrahedron 19, 2163.

[310] Should the novel molecules be surprising? Reviews of progress in 1963. New Scientist 20, 772.

[311] Metals, pauling theory of; Valence State; Valence; Water molecule. In: Encyclopaedic Dictionary of Physics. Oxford: Pergamon Press.

[312] 1964 The nature of the bonding in xenon fluorides and related molecules. J. Chem. Soc. 1442.

[313] (With M. D. POOLE) The stability of naphthocyclobutadienes. Tetrahedron 20, 1859.

[314] R. S. MULLIKEN--his work and influence on quantum chemistry. In: Molecular orbitals in chemistry, physics and biology, pp. 1-15. New York: Academic Press.

[315] (With B. P. JOHNSON) Lower bounds for the energy of H2 =;¹=;. Proc. Phys. Soc. 84, 263.

[316] (With M. D. POOLE) The structure of [18]annulene trisulphide. Proc. Chem. Soc. 220.

[317] The B--O bond lengths in orthorhombic metaboric acid. Acta Cryst. 17, 1086.

[318] The Z-expansion of unrestricted Hartree-Fock atomic orbitals. Proc. Phys. Soc. 84, 511.

[319] Valency. In: A few ideas (talks from B.B.C. Third Programme on Six scientific concepts), pp. 24-30. London: B.B.C. Publications.

[320] Mathematics and the real world. Probe, Journal of the Science Students Council, University of the Witwatersrand, p. 33. (See also 298.)

[321] 1964 (With E. T. STEWART) Wave mechanics and the alkene bond. In: The chemistry of the alkenes (ed. S. Patai), chap. 1, pp. 1-147. New York: Interscience Publishers.

[322] (With M. D. POOLE) Calculations of the formation energy of vacancies in graphite crystals. Carbon 2, 275.

[323] 1965 (With R. M. GLAESER) Multipole moments of the water molecule. Trans. Faraday Soc. 61, 389.

[324] The forces between atoms. Loughborough Colleges' Chem. Soc. J. 2, 48.

[325] (With A. K. CHANDRA) Electrophilic reactions in the anilinium cation. J. Chem. Soc. 2210.

[326] (With R. F. CURL) Coulomb hole in the ground state of two-electron atoms. Proc. Phys. Soc. 85, 647.

[327] (With A. STREITWIESER) Dictionary of [pi]-electron calculations. Oxford: Pergarnon Press; San Francisco: W. H. Freeman. Also reprinted in: Supplemental tables of molecular orbital calculations, vols. 1 and 2 by A Streitwieser & J. I. Brauman. Oxford: Pergarnon Press.

[328] The use of commutator relationships in determining Schrödinger wave functions. Quart. J. Math. 16, 279.

[329] Compounds of the rare gases. The Kemist, University of Ibadan, 2, 5.

[330] A note on the non-orthogonal Hartree-Fock functions. Proc. Phys. Soc. 86, 1371.

[331] (With C. S. SHARMA) Reply to comments by J. Sokoloff. Proc. Phys. Soc. 86, 1273.

[332] Responsibility. (Second Tawney Memorial Lecture.) London: Christian Socialist Movement.

[333] (With H. LOOYENGA) Bond angles in nitrogen-containing heterocyclic molecules isoelectronic with benzene. J. Chem. Soc. 6592.

[334] Intermolecular forces--the known and the unknown. Disc. Faraday Soc. no. 40, 285.

[335] 1966 A scientist's view of the Honest-to-God debate. Impetus, no. 3, 35. Modern Churchmen's Union.

[336] (With D. S. EISENBERG) Interactions of H2O molecules in ice. I, The dipole moment of an H2O molecule in ice. Proc. R. Soc. Lond. A 291, 445.

[337] (With D. S. EISENBERG) Interactions of H2O molecules in ice. II, Interaction energies of H2O molecules in ice. Proc. R. Soc. Lond. A 291, 454.

[338] The force-fields in KrF2 and XeF2. J. Chem. Phys. 44, 468.

[339] (With S. SENENT, M. A. HERRAEZ, M. LEAL & E. SANTOS) Deformation of graphite lattices by interstitial carbon atoms. Carbon 3, 445.

[340] Note on the saddle-point character of Hartree and Hartree-Fock wave functions. In: Quantum theory of atoms, molecules and the solid state, A tribute to John C. Slater (ed. P.-O. Löwdin), pp. 97-103. New York: Academic Press.

[341] (With G. L. CALDOW) Ionization potentials of fluorine-substituted benzenes, ethylenes, and methyl radicals. Tetrahedron, Suppl. no. 7, 127.

[342] (With L. L. BOYLE) Kerr dispersion in alkali metal vapours. Mol. Phys. 11, 165.

[343] (With F. WILLE) Notes on Kuhn's [omega]" molecular orbital method. Tetrahedron 22, 3549.

[344] (With L. L. BOYLE) The Kerr spectrum of hydrogenic atoms. Proc. Phys. Soc. 89, 499.

[345] (With M. WALMSLEY) Lower bound energy calculations for H2 =;¹=;. Proc. Comb. Phil. Soc. 62, 769.

[346] 1967 (With A. JOSEPH) Spheroidal wave functions for the hydrogen atom. Proc. Phys. Soc. 90, 887.

[347] (With M. WALMSLEY) The minimum dipole moment required to bind an electron to a finite electric dipole. Proc. Phys. Soc. 91, 31.

[348] (With A. HIBBERT) [ZETA]- expansion of the unrestricted Hartree-Fock equations for the (1s)(1s) ¹S states of helium and helium-like ions. Proc. Phys. Soc. 91, 33.

[349] (With G. BLYHOLDER) Molecular-orbital models of chemisorption. Trans. Faraday Soc. 63, 1782.

[350] (With Z. LUZ) A note on electron correlation in the hydrogen molecule. Mh. Chem. 98, 967.

[351] (With A. JOSEPH) A constant of the motion for the two-centre Kepler problem. Int. J. Quant. Chem. 1, 337.

[352] (With A. HIBBERT) Saddle-point character of the Hartree-Fock energy. Proc. Phys. Soc. 92, 17.

[353] The shape and size of an excited molecule. Proceedings of International Conference on Spectroscopy, 9-18 January 1967, Bombay, pp. 107-127. Bombay: Tata Institute.

[354] Theoretical aspects of electronic excitation in molecules. In: Collection of papers dedicated to Professor M. Kotani, pp. 112-114. Tokyo.

[355] Science and religion. Proc. R. Instn Gt Br. 41, 480.

[356] In: Three views on commitment (lecture delivered to Oxfam Youth Discussion 1966), pp. 26-56. London: Longmans Green.

[357] (With R. D. LEVINE) On a theory of absolute reaction rates. J. Chem. Phys. 47, 1235.

[358] (With P. COPPENS) The effect of asymmetry of the atomic charge distribution on the positions of terminal atoms as determined with X-rays. Acta Crustallogr. 23, 718.

[359] (With A. JOSEPH) Self-adjoint ladder operators. II. Rev. Mod. Phys. 39, 838.

[360] Quantum chemistry--its past and its future. (Introductory lecture to summer school at Herceg Novi, Yugoslavia, September 1967.) In: Encyclopaedia Moderna, pp. 5-6, 162-164. Belgrade: Graficks preduzece, Slobodan Jovic.

[361] 1968 Theoretical aspects of electronic excitation in molecules: reactivity of the photo-excited organic molecule. In: Proceedings of the 13th Conference on Chemistry, University of Brussels, October 1965, pp. 1-35. London: Interscience.

[362] (With T. W. DINGLE) The B--O bond lengths in boron-oxygen compounds. Acta Crystallogr. B24, 153.

[363] Symmetry. Chem. Brit. 4, 113.

[364] Hyperconjugation and induction in the methyl benzenes. Theoret. Chim. Acta (Berl.) 10, 285.

[365] (With R. B. GERBER) A lower bound property of adiabatic phase shifts. Mol. Phys. 14, 117.

[366] (With G. BLYHOLDER) Basis of extended Hückel formalism. Theoret. Chim. Acta (Berl.) 10, 316.

[367] (With F. A. GIANTURCO) Inner-electron binding energy and chemical bonding in sulphur. Mol. Phys. 14, 223.

[368] (With F. A. GIANTURCO) The size and energy of d orbitals in excited states of the sulphur atom. J. Chem. Soc. A, 1618.

[369] (With F. A. GIANTURCO) Inner-shell double ionization and chemical bonding. I, Auger electrons. J. Phys. B (Proc. Phys. Soc.) I, 605.

[370] A note on bond orders in completely filled molecular-orbital shells. Mol. Phys. 15, 317.

[371] 1968 (With M. D. NEWTON) Localized and delocalized [pi]-electron energies in MO and VB theory. Mol. Phys. 15, 305.

[372] (With Z. Luz) Bond length changes on ionization. Trans. Faraday Soc. 64. 2884.

[373] Note on an integral of A. F. Saturno. Theoret. Chim. Acta (Berl.) 12, 341

[374] (With R. B. GERBER) Effects of complex-valued electronic wave functions on nuclear motions. Int. J. Quant. Chem. 2, 607.

[375] Evaluations of two atomic integrals of Kohl and Bonham. J. Chem. Phys. 49, 4239.

[376] (With G. DOGGETT) The electronic structure of tetrahedral III-V compounds: the ground state of boron nitride, Int. J. Quant. Chem. 2, 825.

[377] 1969 How many different keys ? Math. Gaz. 53, 7.

[378] Faith and technology. (Inaugural lecture, Luton Industrial College, September 1968.) London: Chester House Publications.

[379] d Electrons and molecular bonding. Nature, Lond. 221, 1106.

[380] (With D. D. CLARKE) The dissociative breakdown of negative ions. J. Chem. Soc. A, 169.

[381] What makes a beautiful proof? Bull. Math. Assn India 1, 39.

[382] (With A. HIBBERT) Saddle-point character of Hartree-Fock energies. J. Phys. B (Atom. Molec. Phys.), 2. 458.

[383] A note on cyclic H2B2O3. Acta Crystallogr., B 25, 807.

[384] Mathematical models. From: Report of 4th annual Mathematics Institute, University College, Dar-es-Salaam, December 1968, pp. 180-187.

[385] (With B. M. DEB) On the static Jahn-Teller distortion of the ground state of vanadium tetrachloride. Mol. Phys. 16, 545.

[386] (With F. P. LARKINS) Electronic structure of the neutral isolated divacancy in diamond. J. Phys. Chem. Solids 30, 1963.

[387] On liking mathematics. (Presidential address to the Mathematical Association.) Math. Gaz. 53, 227.

[388] Wave mechanics and the periodic table. In: Mendeleev centenary volume, pp. 201-209.

[389] (With F. A. GIANTURCO) Influence of chemical combination on K-fluorescence lines of compounds of Al, Si and S. Inorganica Chimica Acta 3, 607.

[390] Further note on the saddle-point character of Hartree-Fock wave functions. Acta Physica Academiae Scientiarum Hungaricae 27, 345.

[391] 1970 Molecular objectives in elastic neutron scattering. In: Thermal neutron diffraction, Proceedings of International Summer School, Harwell, 1-5 July 1968 (ed. B. T. M. Willis), pp. 68-81. Oxford: University Press.

[392] [sigma]-Bonds. In: Physical chemistry, vol. 5: Valency (ed. H. Eyring. D. Henderson & W. Jost), chap. 6, pp. 287-367. New York: Academic Press.

[393] [pi]-Bonds. In Physical chemistry, vol. 5: Valency (ed. H. Eyring. D. Henderson & W. Jost), chap. 7, pp. 369-437. New York: Academic Press.

[394] (With M. E. SCHWARTZ & L. C. ALLEN) Dipole moments, atomic charges and carbon inner-shell binding energies of the fluorinated methanes. J. Am. Chem. Soc. 92, 447.

[395] (With F.A. GIANTURCO) Influence of chemical substitution on carbon 1s electrons. The fluorinated methanes. Mol. Phys. 18, 607.

[396] (With R. J. WHITE) Chemical bonds and complex wave functions. Mol. Phys. 18, 577.

[397] The mathematics of quantum chemistry. Int. J. Math. Educ. Sci. Technol. 1, 223.

[398] 1970 (With MARGARET L. BAILEY & J.P.M. BAILEY) The structure of tricyclo-quinazoline. Acta Crystallogr., B 26, 1622.

[399] The scientist's responsibility in society. In: Responsibility in society (the Heriot-Watt University lectures, 1970), pp. 13-31.

[400] Laboratories or computers--the future of experimental chemistry. Gaveshana, 2, 73 (Bengali translation by L. Kundu & B.M. Deb).

[401] Recent developments in valence theory. Pure and Appl. Chem. 24, 257.

[402] Non-valence calculations. Magyar Fizikai Folyórat III. Osztályának Fizikai Közleményei 18, 423.

[403] 1971 Brillouin's theorem and the Hellmann-Feynman theorem for Hartree-Fock wave functions. Mol. Phys. 20, 687.

[404] Recent work on molecular structure calculations. Phys. Bull. 22, 16.

[405] (With B. M. DES) CNDO/2 and INDO all-valence-electron calculations on the geometry and properties of some interhalogens. J. Chem. Soc. A, 958.

[406] Atomer i molekyler. 'What does an atom look like in a molecule?' Kemi Dansk Kemisk Månedsblad 52, 33.

[407] The problems of higher education in Africa. African Affairs 70, 282.

[408] What happens to an atom in a molecule? Mémories de la Socie/té Royale des Sciences de Liège, Volume jubilaire Louis d'Or, 1, 143.

[409] (With B. M. DEB) On the theoretical foundation of Walsh's rules of molecular geometry in terms of the Hellmann-Feynman theorem. Int. J. Quant. Chem. 5, 411.

[410] (With M.W. THOMAS) The effect of molecular vibrations on apparent bond lengths. Acta Crystallogr., B 27, 1354.

[411] (With F. P. LARKINS) Isolated single vacancy in diamond. I, Electronic structure. J. Phys. Chem. Solids 32, 2245.

[412] (With G. BLYHOLDER) Basis of extended Hückel formalism. In: Chemical dynamics (Papers in honor of Henry Eyring), vol. 21 (ed. J. Hirschfelder & D. Henderson): Properties of molecules, pp. 25-36. New York & London: Wiley Interscience. (Reprinted from 366.)

[413] (With R. G. A. R. MACLAGAN) Notes on the two-particle density matrix in [pi]-electron theory. II. In: Chemical dynamics (Papers in honor of Henry Eyring), vol. 21 (ed. J. Hirschfelder & D. Henderson). Properties of molecules, pp. 303-315. New York & London: Wiley Interscience.

[414] 1972 (With J. C. NASH) Transition moment integrals and the hypervirial theorem. I. J. Phys. B (Atom. Molec. Phys.) 5, 921.

[415] Miracles and visions. In: Asking them questions, part I (ed. R. Selby Wright), pp. 79-89. London: Oxford University Press.

[416] Relative dipole moments of excited singlet and triplet states in molecules. Israel J. Chem. 10, 229.

[417] The problems of higher education in Africa. In: Education Yearbook, World perspectives: Developing countries, pp. 171-178. New York: Macmillan and Free Press. (Reprinted from 407.)

[418] Labs or computers--the future of experimental chemistry. Probe, Journal of the Science Students Council, University of the Witwatersrand, 1971-2, p. 9.

[419] 1973 Mathematics and the real world. Presidential address. Bull Inst. Maths. Applicns. 9, 2.

[420] Vacancy centres in the diamond lattice: a critique of current theoretical treatments. In: Radiation damage and defects in semiconductors (ed. J. E. Whitehouse), pp. 249-254. London & Bristol: Institute of Physics.

[421] (With R.J. BOVD) Coulomb hole in some excited states of helium. J. Phys. B (Atom. Molec. Phys.) 6, 782.

[422] 1973 The shape and structure of molecules. Oxford Chemistry Series. Oxford: Clarendon Press.

[423] The influence of wave mechanics on organic chemistry. In: Wave mechanics, the first fifty years (ed. W. C. Price, S. G. Chissick & T. Ravensdale), pp. 225-271. London: Butterworths.

[424] (With A. DOMENICANO & A. VACIAGO) Geometria molecolare dei derivati sostituiti del benzene: deformazioni degli angoli interni dell'anello. Associazione Italiana di Cristallografia and Jugoslavenski Centar z Kristalografiju. Congresso Italo-Jugoslavo, Trieste, 11-14 June 1973, pp. 106-109. Perugia: Istituto di Mineralogia dell'Università.

[425] Bond energies and the Compton profile for molecules. Mol. Phys. 26, 507.

[426] (With P. J. HASKINS) On the relative accuracies of eigenvalue bounds. J. Phys. B (Atom. Molec. Phys.) 6, 1741.

[427] The rôle of mathematics in chemistry. Second presidential address. Bull. Inst. Maths. Applicns 9, 206.

[428] d-Electrons in chemical bonding. In: Proceedings of the Robert A. Welch Foundation Conferences on Chemical Research, vol. XVI: Theoretical chemistry (ed. W. O. Milligan), chap. III, pp. 60-98. Houston, Texas.

[429] Samuel Francis Boys 1911-1972. Biogr. Mem. Fellows R. Soc. Lond. 19, 95.

[430] Electrons in molecules. In: Electrons in crystalline solids, Lectures presented at an International course, Trieste, 10 January-15 April 1972, pp. 183-206. Vienna: International Atomic Agency.

[431] Valence angles in group II A dihalide molecules. Israel J. Chem. 11, 683.

[432] 1974 Mathematics in modern chemistry. Chem. Brit. 10, 16.

[433] Die Mathematik in der modernen Chemie, Angew. Chemie., Nachr. Chem. Techn. 22, 95. (German translation of 432 by F. Wille.)

[434] (With D. EMERSON) Crystal growth and orientational disorder in bromoform. Proc. R. Soc. Lond. A 337, 151.

[435] (With J. C. NASH) Note on some hypervirial calculations. J. Phys. B (Atom. Molec. Phys.) 7, 657.

[436] (With E. A. COLBOURN) A 1/Z-expansion analysis of singlet-triplet differences in the lowest ¹,³II states of H2, HeH=;¹=;, and LiH=;¹=;=;¹=;. J. Phys. B (Atom. Molec. Phys.) 7, 1574.

[437] (With M. WALMSLEY) Studies in the accuracy of some lower-bound formulae--a simple one-dimensional problem. J. Phys. B: Atom. Molec. Phys., 7, 1225.

[438] (With M. S. GOPINATHAN, M. A. WHITEHEAD, J. R. CARRUTHERS & J. S. ROLLETT) A reinvestigation of the crystal and molecular structure of hexachloroborazine. Acta Crystallogr. B30, 731.

[439] (With M. S. GOPINATHAN, M. A. WHITEHEAD, J. R. CARRUTHERS & J. S. ROLLETT) A reinvestigation of the crystal and molecular structure of hexachloroborazine. A correction. Acta Crystallogr. B30, 1650.

[440] (With A. DOMENICANO & A. VACIACO) Molecular geometry of substituted benzene derivatives. I, On the nature of the ring deformations induced by substitution. Acta Crystallogr. (in press).

[441] (With G. N. ROBERTSON) A theory of the broadening of the infrared absorption spectra of hydrogen-bonded species. I. Proc. R. Soc. Lond. A 337, 167.

[442] (With R. J. BOYD) The Fermi hole in atoms. J. Phys. B (in press).

[443] Theoretical chemistry--past and future, Inaugural lecture, 13 February 1973 (edited by S. L. Altmann). Oxford: Clarendon Press.

[444] (With G. N. ROBERTSON) Theory of the broadening of infra-red spectra of hydrogen bonded systems. Proc. R. Soc. Lond. A 337, 167.

In course of preparation

1974 (With A. DOMENICANO & A. VACIAGO) Molecular geometry of urea derivatives: a bond angles-bond lengths correlation.

(With R. B. MALLION) On the question of paramagnetic 'ring currents' in pyracylene and related molecules.

(With J. A. N. F. GOMES & R. B. MALLION) Ring magnetic susceptibilities in conjugated hydrocarbons.

(With H. H. G. KÖPPEL) Pure rotational spectrum of BF3.

Note. Manuscripts, letters, working papers and a collection of minor works have been deposited at the Bodleian Library, Oxford.

The papers deal primarily with CAC's own career from about 1930 to his death in 1974, but include some earlier material relating to the Coulson family, especially Alfred Coulson, CAC's father (earliest date 1905); there is also reference to posthumously-published scientific papers by CAC, to obituaries and tributes, and to a collection of his lectures scheduled for publication in 1978.

Before handing on the collection, Mrs. Coulson, assisted by Miss R. Schwerdt (CAC's secretary), Dr. W.E. Duncanson and other advisers, had perused the papers and placed them in numbered folders and boxes; the initials 'RS' and 'WED' appear on many of the folders. Material considered to be sensitive was removed and transferred by Mrs. Coulson as a separate collection to the Bodleian Library, where it will remain under restriction until 2004. Correspondence was segregated into separate sections (C and G, see notes on pp.134-135, 242) according to the degree of scientific detail it contained, and a full list of CAC's book reviews was compiled by Mrs. Coulson (Box CSAC 60.4.78/D.9); the entries for Boxes CSAC 60.4.78/B.28 - CSAC 60.4.78/B.42 are based on notes made by Dr. R.B. Mallion, Mrs. Coulson and others. We are very pleased to acknowledge this invaluable work initially done before processing began.

The collection, when received, was therefore already partly sorted, numbered and boxed, and this seriously curtailed the degree of flexibility of treatment which it could subsequently bear. Material which might have been re-assembled by subject, chronological or alphabetical order could not be re-assigned because boxes were full and index numbers already allocated. Folders, some exceedingly bulky and heterogeneous in content, could not be split into more manageable units without creating a reference system so complex as to be unproductive. Furthermore, new material, which continued to be received from time to time throughout the processing period, could not be slotted into its logical place for lack of room and could only be attached at the end of a section. Sections A and B have suffered particularly from these addenda; the anomalies which have ensued, though greatly regretted, were inevitable, and every effort has been made to supply cross-referencing and links between items.

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