Catalogue description Catalogue of the papers and correspondence of PATRICK MAYNARD STUART BLACKETT, OM FRS BARON BLACKETT OF CHELSEA (1897-1974)

A. BIOGRAPHICAL AND PERSONAL

CSAC 63.1.79/A.1 - A.106

CSAC 63.1.79/A.1 - A.10 Obituaries and tributes

Biographical and bibliographical notes

CSAC 63.1.79/A.11 - A.39 Career and appointments

CSAC 63.1.79/A.40 - A.84 Honours and awards

Correspondence and letters of congratulation

CSAC 63.1.79/A.85 -A.104 Scrolls, Certificates and Diplomas

CSAC 63.1.79/A.105 -A.106 Photographs and press-cuttings

B. PARTICLE DISINTEGRATION, COSMIC RAYS, ASTROPHYSICS

CSAC 63.1.79/B.1 - B.21 Laboratory notebooks on particle disintegration, 1920-32, with an introductory note

CSAC 63.1.79/B.22 - B.61 Working notes and papers on particle disintegration and cosmic rays, 1923-56, with an introductory note

CSAC 63.1.79/B.62 - B.67 Photographs of particle disintegration and cosmic rays

CSAC 63.1.79/B.68 - B.74 Working notes on theories of the origin of cosmic rays, 1949-55

CSAC 63.1.79/B.75 - B.83 Working notes on astrophysics, 1953-59

CSAC 63.1.79/B.84 - B.131 Lectures, broadcasts, publications, 1932-60, with an introductory note

CSAC 63.1.79/B.132 - B.147 Correspondence, 1923-74, with an introductory note

C. MAGNETISM

Magnetic Spin and Rotating Bodies CSAC 63.1.79/C.1 - C.71

CSAC 63.1.79/C.1 - C.29 Working papers, lectures and publications, 1946-54

CSAC 63.1.79/C.30 - C.40 Notebooks, 1947-54, with an introductory note

CSAC 63.1.79/C.41 - C.71 Correspondence, 1946-73

Rock Magnetism, Continental Drift, Magnetic Field Reversal CSAC 63.1.79/C.72 - C.268

CSAC 63.1.79/C.72 - C.124 Working notes, data, correspondence, 1953-61

CSAC 63.1.79/C.125 - C.188 Working notes, data, correspondence on field reversal, 1963-73, with an introductory note

CSAC 63.1.79/C.189 - C.220 Lectures and papers on rock magnetism, 1953-72

CSAC 63.1.79/C.221 - C.268 Correspondence, 1952-74, with an introductory note

High Temperature Plasmas, Controlled Fusion Reaction and Pinched Discharges CSAC 63.1.79/C.269 - C.285

Notes and working papers, 1958-59, with an introductory note

Miscellaneous Research Notes CSAC 63.1.79/C.286 - C.289

D. SECOND WORLD WAR AND GOVERNMENT COMMITTEES

CSAC 63.1.79/D.1 - D.10 Correspondence and papers, 1936-40

Projects in preparation for war

CSAC 63.1.79/D.11 - D.37 Photo-electric and promixity fuzes Working papers, reports, committee papers, correspondence, 1937-42

CSAC 63.1.79/D.38 - D.58 The Mark XIV Bombsight

Papers and reports, 1940-45, 1973

CSAC 63.1.79/D.59 - D.78 Bombing policy

Working papers, reports, correspondence, 1941-46, 1962

CSAC 63.1.79/D.79 - D.81 Convoys and anti U-boat campaign Reports, correspondence, 1942-43, 1959

CSAC 63.1.79/D.82 Miscellaneous wartime papers

CSAC 63.1.79/D.83 - D.125 Operational Research

Working papers, reports, lectures, correspondence, 1940-74

CSAC 63.1.79/D.126 - D.147 Correspondence, 1942 (only)

CSAC 63.1.79/D.148 - D.160 Chiefs of Staff Subcommittee on Future Weapons, June 1945

CSAC 63.1.79/D.161 - D.183 Joint Technical Warfare Committee (Successor to the above), Oct.1945-Apr.1947, 1959, 1964, 1972

CSAC 63.1.79/D.184 - D.205 Advisory Committee on Atomic Energy (ACAE), Aug.1945-Apr.1949

CSAC 63.1.79/D.206 - D.208 Harwell Power Committee, May-Oct. 1946

CSAC 63.1.79/D.209 - D.216 R.A.F. Aircraft Research Committee, 1946-52

CSAC 63.1.79/D.217 - D.218 Guided Weapons Advisory Committee, 1947-52

E. POLITICAL ACTIVITIES

CSAC 63.1.79/E.1 - E.23 Association of Scientific Workers, 1939-48, 1963-67

CSAC 63.1.79/E.24 - E.34 'The Gaitskell Group', 1956-63

CSAC 63.1.79/E.35 - E.47 Miscellaneous Socialist and Labour Party activities, 1956-64

CSAC 63.1.79/E.48 - E.65 The Ministry of Technology (Mintech), 1963-72

CSAC 63.1.79/E.66 - E.74 Miscellaneous Labour Party and official committees, 1954-69

CSAC 63.1.79/E.75 - E.76 Printed material

F. SCIENCE-RELATED INTERESTS

Lectures, broadcasts, working papers, correspondence, on:

CSAC 63.1.79/F.1 - F.8 History of science and technology, 1936-59

CSAC 63.1.79/F.9 - F.51 Science, education and government, 1944-70

CSAC 63.1.79/F.52 - F.85 Nuclear weapons and disarmament, 1948-64

G. OVERSEAS ACTIVITIES

India, 1947-73 CSAC 63.1.79/G.1 - G.55

CSAC 63.1.79/G.1 - G.31 Reports, lectures, papers, 1947-72

CSAC 63.1.79/G.32 - G.44 Correspondence, mainly on science and defence, 1949-73

CSAC 63.1.79/G.45 - G.51 Correspondence, mainly on development, 1970-73

CSAC 63.1.79/G.52 - G.55 Visits

Developing Countries, Visits and Conferences CSAC 63.1.79/G.56 - G.126

CSAC 63.1.79/G.56 - G.76 Lectures and addresses, 1953-70

CSAC 63.1.79/G.77 - G.81 Organisations and committees, 1959-73

CSAC 63.1.79/G.82 - G.84 Correspondence, 1951, 1964-71

CSAC 63.1.79/G.85 - G.126 Visits and conferences, 1944-71, with an introductory note

H. LECTURES, ADDRESSES, PUBLICATIONS, BROADCASTS, 1934-73

J. CORRESPONDENCE CSAC 63.1.79/J.1 - J.158

K. Conspectus of Publications

The collection is extensive, relating to almost every aspect of Blackett's long and varied career in science and in public life. Blackett himself frequently used the material for lectures and writings on matters of particular personal or historical interest such as his period of research at the Cavendish Laboratory, Cambridge, under Rutherford, operational research and other controversies in the second world war, aspects of India's development, and the like. Furthermore, it is apparent that, towards the end of his life, he was assembling material for one or perhaps two books: a collection of writings and an autobiography. The clearest statement of his intentions is in a letter to M.M. Gowing dated 22 May 1972, in which he says: '... I am considering the possibility of publishing a volume of my collective papers, essays, lectures, etc.' (see CSAC 63.1.79/D.183); in November 1973 he writes in similar vein to the Director, National Maritime Museum: 'I am writing up a good deal about my activities during the war ...' (see CSAC 63.1.79/D.58); the note in H.123 would also seem to be part of a draft introduction to such a work. With this in view, Blackett obtained published or typed copies of the writings chosen for inclusion, revised and emended them, and sometimes added new linking material. Documents of this kind can be found in

CSAC 63.1.79/D.58, D.110, D.183 (quoted in part above)

CSAC 63.1.79/G.23-G.31, G.72, G.84

CSAC 63.1.79/H.1, H.64, H.77, H.96, H.109, H.110, H.119, H.124.

It will be seen that none of these refers to any of Blackett's 'scientific' work in the narrow sense.

As a result of these activities, and of the multiple provenance, the collection when received was in doubtful order. Although most of the folders bore Blackett's own note of the contents, this was not always a reliable guide, as he often 'cannibalised' previous work when preparing a lecture or paper, removing earlier work to a new folder or adding later material to the originals. While every attempt has been made to retain Blackett's preferred order in so far as it can be discerned, his headings and descriptions being preserved and indicated by inverted commas in the catalogue entries, some re-organisation was undertaken to bring the material under the broad headings of the List of Contents.

The introductory notes to the Sections and sub-sections of the catalogue indicate the main areas of interest in the collection.

Various episodes in Blackett's career can be clarified, or more accurately dated, from the manuscripts, and are briefly noted here in chronological order. Fuller accounts appear in the catalogue entries.

CSAC 63.1.79/J.35, correspondence with A.V. Hill on the date of Blackett's appointment as Scientific Adviser to General Sir Frederick Pile, A.A. Command;

CSAC 63.1.79/D.84, Blackett's paper, 'Scientists at the operational level', leading to his appointments as Chief Adviser Operational Research, later Director, Naval Operational Research;

CSAC 63.1.79/D.174, J.3, correspondence with C.R. Attlee and others on Blackett's paper on the international control of atomic energy;

CSAC 63.1.79/B.48, correspondence with C.D. Anderson on the discovery and naming of V-particles;

CSAC 63.1.79/E.24, E.33, papers and correspondence on the 'Gaitskell Group' of Labour Party advisers.

There are also the text of, or material relating to a substantial number of publications by Blackett omitted from the Bibliography accompanying the Memoir by A.C.B. Lovell (Biographical Memoirs of the Fellows of the Royal Society, 21, 1975, 1-115, also available as a separate publication). They are listed here in catalogue sequence.

CSAC 63.1.79/B.115, B.116, B.120

CSAC 63.1.79/B.197-C.199

CSAC 63.1.79/D.104, D.108

CSAC 63.1.79/F.19-F.21, F.30, F.58, F.63, F.72-F.74

CSAC 63.1.79/G.4 (Blackett's report on the organisation of the armed forces of India), G.66, G.71, G.110

CSAC 63.1.79/H.8, H.45, H.74, H.77, H.105, H.122, H.132, H.136, H.137, H.139

CSAC 63.1.79/J.6, J.116

There are in addition many unpublished writings throughout the collection.

For all the wealth of material in certain areas, there are lacunae elsewhere. No documents survive, for example, relative to Blackett's long service with the National Research and Development Corporation 1949-64, or the Department of Scientific and Industrial Research 1955-60; and, of his correspondence in the war years, only that for 1942 survives (CSAC 63.1.79/D.126 - D.147).

Blackett always had a fondness for acronyms and abbreviations, and this grew stronger with age; same of his later notes and drafts bristle with clusters of initials which, in conjunction with his increasingly cramped hand and his habit of paginating by beginning with Roman I (on a page often later removed) and continuing in Arabic numbers 2...n, make them difficult to follow or attribute with confidence. Conversely, one can only admire his determination to maintain a presence in the world of scientific research despite great pressures of public life, and, later, of failing powers; the documents and correspondence on his last research (CSAC 63.1.79/C.182 - C.185) convey this especially clearly.

PRESENTATION

The material in Sections A - H is presented chronologically within the sub-sections designated in the list of contents. Section J. Correspondence, is in alphabetical order. Many of the Sections and sub-sections include a brief introductory note summarising their contents and drawing attention to material of particular interest.

Scientific research notes and data

Blackett's scientific fame rests in part on the versatility of mind which enabled him to make significant contributions to knowledge in several areas of research (particle disintegration, magnetic spin, rock magnetism) as well as to develop the technique of operational research. Nevertheless, these contributions emerged from a gradual evolution in Blackett's thinking, and there is no sharp switch from one to another even when there is a discontinuity in time (such as the long period of war service) or place (such as the various moves from Cambridge to Birkbeck, Manchester and Imperial College). The distinction between Sections B and C is therefore to some extent an artificial one, and cases of overlapping material are noted in the entries.

Almost all the material was received in Blackett's own folders, usually with his note of the contents in some abbreviated form, E.g., 'C.R.' (= Cosmic Rays), 'R.M.' (= Rock Magnetism). The contents of the folders may be any or all of the following: laboratory experiments, datasheets, graphs and calculations; notes, drafts and comments for talks or publications; Blackett's or others' offprints, sometimes annotated; correspondence. Bulky folders have been split into more manageable units, but kept together with a note of their original grouping. Blackett's titles and descriptions of the folders are given in inverted commas.

Blackett kept various sequences of his notes clipped or pinned together. These sequences have been retained in his order, although the pagination, size of paper, etc. are often heterogeneous.

Many of Blackett's own notes were made on the backs of previous notes, drafts, proofs, etc. No attempt has been made to give an account of such material.

Lectures and publications

Manuscript notes, typed drafts or offprints of Blackett's extensive output of lectures and writings are to be found throughout the collection. Those on specific research topics were kept by him with the data in Sections B and C and have been left there; similarly with material on operational research in Section D and on India in Section G. Section F groups together talks on three topics arising from Blackett's involvement in public life, and Section H contains the sequence of all other surviving documents of this type, including his Anniversary Addresses as President of the Royal Society and his speeches in the House of Lords.

Correspondence

Correspondence dealing with a specific research topic, lecture or publication was usually kept by Blackett in the same folder as his notes and drafts on the subject. Such material has been left in place whenever possible, or, if it has been re-allocated, a note has been made to that effect. The correspondence on magnetic spin (CSAC 63.1.79/C.41 - C.71) and on rock magnetism (CSAC 63.1.79/C.221 - C.268) is in chronological order and enables Blackett's thinking, his methods, and the graph of his activity to be clearly seen. The surviving correspondence on cosmic rays (CSAC 63.1.79/B.132 - B.147) is, though interesting, regrettably much less complete. There is very little material remaining from the war years.

Correspondence on overseas activities (CSAC 63.1.79/G.32 - G.51, G.82 - G.84) and general correspondence in Section J are in alphabetical order, with dates and an indication of any material of personal or scientific interest; a note is also made of cases when only Blackett's carbon copy survives.

References

Material in every Section is linked as far as possible to A.C.B. Lovell, Biographical Memoirs of Fellows of the Royal Society, 21, 1975, 1-115

References to the text are in the form Lovell, Memoir, p ...

References to the Bibliography are in the form RS ...

When this catalogue was in proof, Lady Blackett contributed some additional material, including plans and extracts from her husband's autobiography. These documents appear as CSAC 63.1.79/A.10A.

A biographical 'Memoir' of Sir Patrick Maynard Stuart FRS was written by Lovell and published in the 'Biographical Memoirs of Fellows of the Royal Society' Volume 21 1975 by the Royal Society.

The following is a conspectus of Blackett's publications as listed in the Bibliography of the 'Memoir', and the principal items in the catalogue to which they refer. Only the more extended references (to research, publication or reception of work and ensuing correspondence) are given, minor allusions in letters, requests for reprints etc being omitted.

This is followed by a copy of the Bibliography taken from the 'Memoir'. It is reproduced here by permission in order to enable users of the Conspectus to identify the full titles of works elsewhere referred to in the form RS....

Compiled by Jeannine Alton, Harriot Weiskittel and Julia Latham-Jacskon ACKNOWLEDGEMENTS

We are very pleased to acknowledge the invaluable work of Professor H. Elliot and Dr. J.P. Astbury in identifying for the Conspectus of Publications the manuscripts and correspondence in Section B.

We are grateful for the advice given by Dr. W.S.C. Williams on cosmic rays, and by Professor E.A. Vincent on rock magnetism.

Our thanks are also due to Mrs. M.M. Edwards for careful and accurate typing, and her patience with successive drafts and revisions of the catalogue.

Blackett, Patrick Maynard Stuart, 1897-1974, scientist and physicist

The material was assembled from various sources:

from Blackett's flat in London and his house in Wales, via Lady Blackett;

from his room at Imperial College, London, via the Royal Society and Professor H. Elliot.

Lady Blackett currently retains Blackett's diaries of his service in the Navy 1914-16 (see CSAC 63.1.79/A.11), four bound volumes of press-cuttings, photographs and other family documents.

Number in Royal Society Memoir Reference to folders or items in this catalogue

R.S.1 CSAC 63.1.79/B.2, B.3, B.28, B.64

R.S.2 CSAC 63.1.79/B.22, B.24, B.64, B.133

R.S.3 CSAC 63.1.79/B.4, B.9, B.23, B.26, B.27, B.62. B.64

R.S.4

R.S.5 CSAC 63.1.79/B.10-B.12

R.S.6 CSAC 63.1.79/B.8, B.17, B.29, B.62, B.63, B.145-B.147

R.S.7 CSAC 63.1.79/B.13

R.S.8

R.S.9 CSAC 63.1.79/B.13, B.14, B.15

R.S.10

R.S.11

R.S.12

R.S.13

R.S.14

R.S.15 CSAC 63.1.79/B.17, B.18

R.S.16 CSAC 63.1.79/B.19, B.20, B.26-B.30, B.145-B.147

R.S.17

R.S.18 CSAC 63.1.79/B.19, B.20, B.111, B.146, B.147

R.S.19 CSAC 63.1.79/B.19, B.20

R.S.20 CSAC 63.1.79/B.65, B.66

R.S.21

R.S.22 CSAC 63.1.79/B.134, B.138

R.S.23

R.S.24 CSAC 63.1.79/B.65, B.66, B.138

R.S.25 CSAC 63.1.79/A.26

R.S.26

R.S.27

R.S.28 CSAC 63.1.79/B.134, B.138

R.S.29 CSAC 63.1.79/B.33, B.111

R.S.30 CSAC 63.1.79/B.34, B.85

R.S.31

R.S.32 CSAC 63.1.79/H.1

R.S.33

R.S.34

R.S.35 CSAC 63.1.79/B.84, B.144

R.S.36

R.S.37 CSAC 63.1.79/B.90, B.91

R.S.38 CSAC 63.1.79/B.84, B.104

R.S.39

R.S.40 CSAC 63.1.79/B.136-B.138

R.S.41 CSAC 63.1.79/B.35-B.37

R.S.42 CSAC 63.1.79/B.86, B.95, B.99, B.136-B.138

R.S.43

R.S.44

R.S.45

R.S.46

R.S.47

R.S.48 CSAC 63.1.79/B.87

R.S.49

R.S.50

R.S.51 CSAC 63.1.79/B.87, B.90

R.S.52 CSAC 63.1.79/E.19

R.S.53

R.S.54 CSAC 63.1.79/B.69, B.70, B.140, C.1-C.4

R.S.55 CSAC 63.1.79/H.18-H.23

R.S.56 CSAC 63.1.79/B.69, B.70, B.74, B.139, B.142, C.9-C.12, C.17

R.S.57 CSAC 63.1.79/H.29-H.41

R.S.58 CSAC 63.1.79/B.58-B.62

R.S.59 CSAC 63.1.79/B.102

R.S.60 CSAC 63.1.79/B.115, C.17, C.18

R.S.61 CSAC 63.1.79/C.19, C.20

R.S.62 CSAC 63.1.79/B.141

R.S.63 CSAC 63.1.79/B.40, B.55, B.95, B.104

R.S.64

R.S.65 CSAC 63.1.79/D.59, D.105

R.S.66 CSAC 63.1.79/B.38, B.39, B.113

R.S.67 CSAC 63.1.79/B.55, B.112, B.114

R.S.68

R.S.69 CSAC 63.1.79/H.51

R.S.70 CSAC 63.1.79/B.38, B.39, B.108, B.113

R.S.71 CSAC 63.1.79/C.87-C.90

R.S.72 CSAC 63.1.79/C.79-C.83, C.87-C.90, C.91-C.92, C.193

R.S.73 CSAC 63.1.79/H.53-H.56, J.15

R.S.74 CSAC 63.1.79/H.57-H.73

R.S.75 CSAC 63.1.79/F.60

R.S.76 CSAC 63.1.79/B.125

R.S.77 CSAC 63.1.79/H.78-H.80

R.S.78 CSAC 63.1.79/G.60

R.S.79 CSAC 63.1.79/C.101, C.107, C.206

R.S.80

R.S.81

R.S.82

R.S.83 CSAC 63.1.79/H.83-H.88

R.S.84 CSAC 63.1.79/G.96

R.S.85

R.S.86 CSAC 63.1.79/G.63

R.S.87

R.S.88 CSAC 63.1.79/C.106-C.124

R.S.89 CSAC 63.1.79/J.44, J.63, J.107

R.S.90 CSAC 63.1.79/C.97, C.207, G.102-G.103

R.S.91 CSAC 63.1.79/D.84, D.101-D.102, H.93-H.95

R.S.92 CSAC 63.1.79/D.86, D.101-D.102, H.93-H.95

R.S.93 CSAC 63.1.79/D.103, H.93-H.95

R.S.94 CSAC 63.1.79/F.53, H.93-H.95

R.S.95 CSAC 63.1.79/H.93-H.95

R.S.96 CSAC 63.1.79/H.93-H.95

R.S.97 CSAC 63.1.79/D.109, H.93-H.95

R.S.98 CSAC 63.1.79/F.68-F.69, H.93-H.95, J.63

R.S.99 CSAC 63.1.79/G.65, H.97

R.S.100 CSAC 63.1.79/H.93-H.94, H.96

R.S.101 CSAC 63.1.79/G.67

R.S.102 CSAC 63.1.79/H.98-H.100

R.S.103 CSAC 63.1.79/H.102

R.S.104 CSAC 63.1.79/C.215, C.244

R.S.105 CSAC 63.1.79/H.110

R.S.106 CSAC 63.1.79/H.113

R.S.107 CSAC 63.1.79/G.120-G.121

R.S.108 CSAC 63.1.79/H.119

R.S.109 CSAC 63.1.79/C.217

R.S.110 CSAC 63.1.79/H.124

R.S.111 CSAC 63.1.79/H.120

R.S.112 CSAC 63.1.79/H.118

R.S.113 CSAC 63.1.79/H.134

R.S.114 CSAC 63.1.79/G.12-G.16, G.69

R.S.115 CSAC 63.1.79/E.73

R.S.116 CSAC 63.1.79/H.126-H.132

R.S.117 CSAC 63.1.79/H.139

R.S.118 CSAC 63.1.79/G.123

R.S.119 CSAC 63.1.79/F.49-F.51

R.S.120 CSAC 63.1.79/G.70

R.S.121 CSAC 63.1.79/G.72

R.S.122 CSAC 63.1.79/H.146-H.149

R.S.123

R.S.124 CSAC 63.1.79/G.74

R.S.125 CSAC 63.1.79/H.150

R.S.126 CSAC 63.1.79/H.151

R.S.127 CSAC 63.1.79/H.152

R.S.128 CSAC 63.1.79/B.143, H.154

R.S.129 CSAC 63.1.79/H.154

R.S.130 CSAC 63.1.79/G.17-G.22

R.S.131 CSAC 63.1.79/H.156

LIST OF PUBLICATIONS

Reproduced by permission from Biographical Memoirs of Fellows of the Royal Society, 21, 1975, 108-113

(1) 1922 On the analysis of [gamma]-ray photographs. Proc. R. Soc. Lond. A 102, 294.

(2) 1923 A note on the natural curvature of [gamma]-ray tracks. Proc. Comp. phil. Soc. 21, 517.

(3) The study of forked [gamma]-ray tracks. Proc. R. Soc. Lond. A 103, 62.

(4) 1924 Angular momentum and electron impact. Proc. Camb. phil. Soc. 22, 56.

(5) 1925 (With J. FRANCK) Anregung von Spektren des Wasserscoffs durch Elektronenstoss. Z. Phys. 34, 389.

(6) The ejection of protons from nitrogen nuclei, photographed by the Wilson method. Proc. R. Soc. Lond. A 107, 349.

(7) 1927 (With E.P. HUDSON) The elasticity of the collisions of [gamma]-particles with hydrogen nuclei. Proc. R.Soc. Lond. A 117, 124.

(8) The limits of classical scattering theory. Proc. Camb. phil. Soc. 23, 698.

(9) An automatic cloud chamber for the rapid production of [gamma]-ray photographs. J. scient. Instrum. 4, 433.

(10) 1929 On the automatic use the standard Wilson chamber. J. scient. Instrum. 6, 184.

(11) On the design and use of a double camera for photographing artificial disintegrations. Proc. R. Soc. Lond. A 123, 613.

(12) 1930 (With E.K. RIDEAL) Measurement of relative specific heats of gases at high temperatures. Nature, Lond. 125, 816.

(13) (With P.S.H. HENRY) A flow method for comparing the specific heats of gases. II. The theory of the method. Proc. R. Soc. Lond A 126, 333.

(14) (With P.S.H. HENRY & E. K. RIDEAL) A flow method for comparing the specific heats of gases. I. The experimental method. Proc. R. Soc. Lond. A 126, 319.

(15) 1931 (With F. C. CHAMPION) The scattering of slow [gamma]-particles by helium. Proc. R. Soc. Lond. A 130, 380.

(16) 1932 (With D. S. LEES) Further investigations with a Wilson chamber. II. The range and velocity of recoil atoms. Proc. R. Soc. Land. A 134, 658.

(17) On the loss of energy of [gamma]-particles and H-particles. Proc. R. Soc. Lond. A 135, 132.

(18) (With D. S. LEES) Investigations with a Wilson chamber. I. On the photography of artificial disingration collisions. Proc. R. Soc. Lond. A 136, 325.

(19) 1932 (With D.S. LEES) Further investigations with a Wilson champer. III. the accuracy of the angle determinations. Proc. R. Soc. Lond. A 136, 368.

(20) (With G. P. S. OCCHIALINI) Photography of penetrating corpuscular radiation, Nature, Lond, 130, 363.

(21) 1933 Cosmic radiation. Q. H R. met. Soc. 59, 217. (Summarized in Observatory 56, 122.)

(22) (With J. CHADWICK & G. P. S. OCCHIALINI) New evidence for the positive electron. Nature, Lond. 131, 473.

(23) Inaugural address, Birkbeck College, 2 November 1933. Nature, Lond. 132, 741.

(24) The positive electron, Nature, Lond. 132, 917.

(25) The craft of experimental physics. University Studies (ed. Harold Wright). London: Nicholson & Watson.

(26) (With G. P. S. OCCHIALINI) Some photographs of the tracks of penetrating radiation. Proc. R. Soc. Lond. A 139, 699.

(27) 1934 Cosmic radiation (Royal Institution Evening Discourse.) Proc. R. Instn Gt Br. 28, 312.

(28) (With J. CHADWICK & G. P. S. OCCHIALINI) Some experiments on the production of positive electrons. Proc. R. Soc. Lond. A 144, 235.

(29) On the technique of the counter controlled cloud chamber. Proc. R. Soc. Lond. A 146, 281.

(30) 1935 The absorption of cosmic rays. International conference on physics Vol. I, Nuclear physics, P. 199. London: Physical Society.

(31) La radiation cosmique, Paris: Hermann & Cie.

(32) The frustration of science, ch. VII. London: Allen & Unwin.

(33) Zum Ultrastrahlungsproblem. Phys. Z. 36, 773; and Z. tech. Phys. 16, 379.

(34) 1936 The measurement of the energy of cosmic rays. I. The electro-magnet and the cloud chamber. Proc. R. Soc. Lond. A 154, 564.

(35) (With R.B. BRODE) The measurement of the energy of cosmic rays. II. The curvature measurements and the energy spectrum. Proc. R. Soc. Lond. A 154, 573.

(36) Cosmic rays. The Halley lecture 1936. Oxford: Clarendon Press.

(37) 1937 Cosmic radiation (three Cantor lectures). J. R. Soc. Arts 85, 893, 905, 921. (The first of these three lectures was reprinted in Scient. Am. November 1938, p. 246 and in Smithson. Ann. Rep. 1938, p. 175.)

(38) Further measurements of the cosmic ray energy spectrum. Proc. R. Soc. Lond. A 159, 1.

(39) The energy-range relation for cosmic ray particles. Proc. R. Soc. Lond. A 159, 19.

(40) (With J. G. WILSON) The energy loss of cosmic ray particles in metal plates. Proc. R. Soc. Lond. A 160, 304.

(41) 1938 On the instability of the barytron and the temperature effect of cosmic rays. Phys. Rev. 54, 973.

(42) The nature of the penetrating cornponent of cosmic rays. Proc. R. Soc. Lond. A 165, 11.

(43) (With J. G. WILSON) The scattering of cosmic ray particles in metal plates. Proc. R. Soc. Lond, A 165, 209.

(44) High altitude cosmic radiation. Nature, Lond, 142, 692.

(45) Further evidence for the radioactive decay of mesotrons. Nature, Lond. 142, 992.

(46) 1939 (With F. C. WILLIAMS) An automatic curve follower for use with the differential analyser. Proc. Camb. Phil. Soc. 35, 494.

(47) Cosmic rays-the 30th Kelvin lecture. F. Instn elect. Engrs 85, 681.

(48) 1939 Instability of the mesotron and the gravitational constant. Nature, Lond. 144, 30.

(49) (With B. ROOSI) Some recent experiments on cosmic rays. Rev. mod. Phys. 11, 277.

(50) 1941 (With A.C.B. LOVELL) Radio echoes and cosmic ray showers. Proc. R. Soc. Lond. A 177, 183.

(51) Cosmic rays: recent developments-the 24th Guthrie lecture. Proc. phys. Soc. 53, 203.

(52) 1946 The atom and the charter. London: Fabian Publications.

(53) Science and the welfare of mankind, p. 21. The Temple Fortune Press.

(54) 1947 On Pomeranchuk's theory of the radiation by ultra-relativistic electrons in the Earth's magnetic field. Physical Society report on International Conference on Fundamental particles and low temperatures, Vol, I, Fundamental particles, p. 79.

(55) Evan James Williams, 1903-45. Obit. not. Fell. R. Soc. 5, 387. (The extract appropriate to operational research is reprinted in Studies of war pt 2, ch. 4, p. 235. Edinburgh: Oliver and Boyd, 1962.

(56) The magnetic field of massive rotating bodies. Nature, Lond. 159, 658.

(57) 1948 Military and political consequences of atomic energy. London: Turnstile Press.

(58) A possible contribution to the light of the night sky from the Cerenkov radiation emitted by cosmic rays. Physical Soc. Gassiot Committee Report: the emission spectra of the might sky and aurorae, p. 34.

(59) Cloud chamber researches in nuclear physics and cosmic radiation. (Nobel Lecture, 13 December 1948.) Nobel lectures: Physics 1942-62, p. 97. Amsterdam: Elsevier (1964).

(60) 1949 The magnetic field of massive rotating bodies. Phil. Mag. (7) 40, 125.

(61) Rotation and terrestrial magnetism. (R.A.S. Geophysical Discussion, 25 February 1949.) Observatory 69, 103.

(62) Magnetic field of large rotating bodies. (Royal Institution Evening Discourse, 8 April 1949.) Proc. R. Instn Gt Br. 34, 393.

(63) Cloud chamber studies of penetrating showers. Nuovo Cim. (9) 6, 459.

(64) 1952 A negative experiment relating to magnetism and the Earth's rotation. Phil. Trans. R. Soc. Lond. A 245, 309.

(65) 1953 Recollections of problems studied 1940-45. Brassey's annual 1953. (Reprinted in Studies of war, pt 2, ch. 3, p. 205. Edinburgh: Oliver & Boyd, 1962.)

(66) 1954 Time variations of cosmic rays. Re. Seminar mat. fis. Milano 24, 34 (1952-53).

(67) V-particles and the cloud chamber. Nuovo Cim. (9) 11, 264.

(68) America's atomic dilemma. The New Statesmen and Nation, 13 February 1954. British policy and the H-bomb. The New Statesman and Nation, 14, 21 and 28 August 1954. Scientific method and the study of war. The Listener, 10 November 1955.

(69) 1955 Rutherford memorial lecture 1954. Phys. Soc. Year Book, p. 13.

(70) 1956 Cosmic rays and the Sun. Vistas Astr. (ed. A. Beer) 2, 820.

(71) (With D. J. SUTTON) A new magnetic measuring instrument. Appendix 1 in Lectures on rock magnetism. Israel: The Weizmann Press.

(72) Lectures on rock magnetism. (The second Weizmann Memorial Lectures, December 1954.) Israel: The Weizmann Press.

(73) Atomic weapons and East-West relations. (The Lees Knowles Lectures on military science.) Cambridge University Press.

(74) 1957 Technology and world advancement (Presidential Address to the British Association in Dublin, 4 September 1957). Advmt Sci. Br. Ass. 14, 3. (A shortened version was printed in The Listener 58, 331, 1957.)

(75) 1958 Atomic heretic. The Listner, 11 September, p. 375.

(76) 1958 The elementary particles of nature. (The Silvanus Thompson Memorial Lecture 1957.) Br. J. Radiol. 31, 1.

(77) 1959 The Rutherford Memorial Lecture 1958. (McGill University 29 September 1958). Proc. R. Soc. Lond. A 251, 293.

(78) The problem of the underdeveloped countries. (The David Davies Memorial Lecture November 1959.) David Davies Memorial Institute of International Studies.

(79) 1960 (With J. A. CLEGG & P. H. S. STUBBS) An analysis of rock magnetic data. Proc. R. Soc. Lond. A 256, 291.

(80) The magnetism of rocks and continental drift. (Fiftieth May Lecture of the Institute of Metals, 29 March 1960.) J. Inst. Metals 89, 113.

(81) Charles Thomas Rees Wilson. Biogr. Mem. Fellows R. Soc. 6, 269.

(82) Jean Frederic Joliot. Biogr. Mem. Fellows R. Soc. 6, 87.

(83) Tizard and the science of war. (Institute for Strategic Studies, 11 February 1960.) Nature, Lond. 185, 647. (Reprinted in Studies of war, pt 1, ch. 8, p. 101. Edinburgh: Oliver & Boyd, 1962.)

(84) New science or old technology in Science and the new nations. International conference on science in the advancement of the new states, Rehovoth, Israel, 16 August 1960. p. 11. London: A. Deutsch (1963).

(85) 1961 Controlled fusion reactions. (The forty-seventh Thomas Hawksley Lecture, 22 February 1961) Proc. Instn mech. Engrs 175, 39.

(86) Science and technology and the developing countries. (Tenth Hinchley Memorial Lecture.) Trans. Instn chem. Engrs 39, 299.

(87) Note on the history of the experimental proof of non-conservation of parity. Physics to-day 14, 86.

(88) Comparison of ancient climates with the ancient latitudes deduced from rock magnetic data. Proc. R. Soc. Lond. A 263, I.

(89) Science and government. Scient. Am. April 1961. (Reprinted in Studies of war, pt 1, ch. 9, p. 120. Edinburgh: Oliver & Boyd, 1962.)

(90) 1962 On distinguishing self-reversed from field-reversed rocks. J. phys. Soc. Japan 17, 699.

(91) Operational research, Document I. Scientists at the operational level.

Advint Sci. Br. Ass. 5, 26 (1948). (Reprinted in Studies of war pt II, ch. 1, p. 169. Edinburgh: Oliver & Boyd.)

(92) Operational research. Document II. A note on certain aspects of the methodology of operational research. Advmt Sci. Br. Ass. 5, 29 (1948).

(Reprinted in Studies of war pt II, ch. 1. p. 176. Oliver & Boyd.)

(93) The scope of operational research. Opl Res. Q. 1, no. 1 March 1950.

(Reprinted in Studies of war, pt II, ch. 2, p. 199. Oliver & Boyd)

(94) The military consequences of atomic energy. (The Sir Halley Stewart Lectures, 1948.) Ch. II of The atomic age, London: Allen & Unwin (1949).

(Reprinted in Studies of war, pt I, ch. I, p. 3 Edinburgh: Oliver & Boyd.)

(95) Nuclear weapons and defence. International Affairs 34, October 1958.

(Reprinted in Studies of war, pt I, ch, 5, p. 54. Oliver & Boyd.)

(96) Thoughts on British defence policy. The New Statesman, 5 December 1959.

(Reprinted in Studies of war, pt I, ch. 7, p. 78. Oliver & Boyd.)

(97) Operational research and nuclear weapons. H. R. Un. Serv. Instn August 1961. (Another version under the title: Critique of some contemporary defence thinking appeared in Encounter April 1961, and in Studies of war, pt I, ch. 10, p. 128. Edinburgh: Oliver & Boyd.)

(98) The real road to disarmament. The New Statesman, 2 March 1962. (Reprinted in Studies of war, pt I, ch. II, p. 147. Edinburgh: Oliver & Boyd Also a shorter version: Steps towards disarmament in Scient. Am. April 1962.)

(99) 1962 Science, technology and world advancement. (The Irvine Memorial Lecture at the University of St Andrews, 3 November 1961.) Nature, Lond. 193, 416.

(100) Organisational problems of scientific research in the universities. Nature, Lond. 194, 721.

(101) 1963 Address at United Nations Conference on applications of science and technology for the benefit of less developed areas. Geneva, February 1963. Plenary Proceedings (2nd plemary session) vol. 8, pt 1, p. 49.

(102) 1964 The universities and the nation's crisis. (The British Association Granada Lecture, 8 October 1963.) Adumt Sci Br. Ass. p. 379.

(103) Wanted: a wand over Whitehall. New Statesman 68, 346.

(104) 1965 Introduction to 'A symposium on continental drift' (19-20 March 1964). Phil. Trans. R. Soc. Lond. A 258, vii.

(105) 1966 Science, technology and government. University of Exeter Gasette, no. 43, p. 3. 1966.

(106) Education and the trade gap. Tizard Memorial Lecture, Westminster School, 24 February 1966.

(107) 1967 The ever widening gap. (Address to the Washington meeting of the American Association for the Advancement of Science, 27 December 1966.) Science N.Y. 155, 959.

(108) 1966 Technology, industry and economic growth. 13th Fawley Foundation Lecture, University of Southampton, 1966.

(109) Continental drift. (Eight Hugh Macmillan Lecture to the Institution of Engineers and Shipbuilders Scotl. 109, 177.

(110) 1967 Address at annual luncheon of the Parliamentary and Scientific Committee 16 February 1967.

(111) Anniversary address, Royal Society, 30 November 1966. Proc. R. Soc. Lond. A. 296, v.

(112) The Lunar Society of Birmingham. Univ. Birmingham Hist. J. 11. 1.

(113) 1968 Speech on the occasion of the opening of the new premises at Carlton House Terrace, 21 November 1967. Notes Rec. R. Soc. Lond. 23, 5.

(114) Science and technology in an unequal world. (First Jawaharlal Nehru Memorial Lecture, New Delhi, 13 November 1967.) New Delhi: Indraprastha Press.

(115) Memorandum to the Select Committee on Science and Technology, March 1968.

(116) Anniversary address, Royal Society, 30 November 1967. Proc. R. Soc. Lond. A 303, v.

(117) 1969 Anniversary address, Royal Society, 30 November 1968. Proc. R. Soc. Lond. A. 308, v.

(118) The old days of the Cavendish. (Lecture at meeting of the European Physical Society, Florence 1969.) Riv. nuovo Cim. (1) 1, xxxii.

(119) 1970 Anniversary address, Royal Society, 1 December 1969. Proc R. Soc. Lond. A 314, 285.

(120) Reflections on science and technology in developing countries. (The Gandhi Memorial Lecture, Nairobi, 1969.) Nairobi: East African Publishing House.

(121) The gap widens. (The Rede Lecture, Cambridge, 15 May 1969.) Cambridge University Press.

(122) Hansard (House of Lord), 308, col. 384.

(123) 1971 Anniversary address, Royal Society, 30 November 1970, Proc. R. Soc. Lond. A 321, 1.

(124) 1971 Science, technology and aid in developing countries. (Third Encyclopaedia Britannica Lecture.) Edinburgh University Press.

(125) Hanard (House of Lords), 315, col. 184.

(126) 1972 Hanard (House of Lords), 328, col. 833.

(127) Hanard (House of Lords), 330, col. 127.

(128) Rutherford. Notes Rec. R. Soc. Lond. 27. 57.

(129) The rich and poor nations. Technol. Sci. 7, 40. Bath University Press.

(130) 1973 Aspects of India's development. (The fourth Nehru Memorial Lecture, 7 December 1971.) The Jawaharlal Nehru Memorial Trust.

(131) Vikram Sarabhai. Obituary notice. Proc. 13th Int. cosmic Ray Conference 5, 3482.

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