The vast majority of the material relates to Dent's research and clinical interests and falls into four main categories: correspondence files; files created around the publication of papers; lecture notes and symposium papers; and case/research notes. There are also smaller quantities dealing with other aspects of his career, such as the administration of UCH Metabolic Ward. The papers thus reflect most of Dent's scientific and clinical interests. This research is mainly represented by the abstracted documentation which he kept with drafts of his published papers (see section E.1) and also by correspondence about cases and clinical case notes (see section C.5). To a lesser degree they also illustrate the work at the laboratory bench which underpinned much of this research. For example, a file of unidentified paper chromatograms has been preserved (C.2/10) to illustrate one of Dent's methods of working, as described by his colleague, Heathcote, and quoted in the Biographical Memoirs of Fellows of the Royal Society, 1978: 'Paper chromatograms were not to be thrown away. They were filed and, since the colours faded, the outline of each spot was drawn in and the intensity of the colour was indicated by a number.' The way in which Dent compiled a large series of files around drafts of scientific papers also illustrates the importance of the published paper to him as a stage in the research process. An incomplete collection of reprints of Dent's published papers may be found in section E.2 of the collection.

The collection provides good documentation of many aspects of McIlwain's career and his contribution to the development of neurochemistry in the UK and internationally.

Section A, Biographical, brings together obituaries, curricula vitae and bibliographies, and material relating to the various stages of McIlwain's scientific career, especially in the 1930s and 1940s, his appointment to the Biochemistry Chair at the Institute of Psychiatry in 1954 and the symposium held in his honour on his retirement in 1980. The section also presents a significant body of material relating to McIlwain's undergraduate studies at King's College, University of Durham, including essays and notebooks.

Section B, Institute of Psychiatry, is principally papers relating to the activities of McIlwain's own Department of Biochemistry and especially its teaching programme in neurochemistry. There is also material relating to various government and University of London enquiries into medical education.

Section C, Research, includes copies of McIlwain's M.Sc. and Ph.D. theses, notes, drafts and reports for early work in the 1930s and correspondence 'from the Lab' for the 1930s and 1940s.

Section D, Publications, lectures and broadcast, is the largest in the collection. It presents significant documentation, especially correspondence, relating to his textbook Biochemistry and the central nervous system which went through five editions, 1955-1985, and important editorial correspondence for the Biochemical Journal (member of the Editorial Board, 1946-1950), Biochemical Pharmacology and Journal of Neurochemistry. There are also drafts for lectures and seminars for scientific audiences in the UK and abroad, principally from the 1960s onwards.

Section E, Societies and organisations, documents McIlwain's involvement with a number of UK and international bodies including the Biochemical Society, the International Brain Research Organisation and the International Society for Neurochemistry (ISN) of which he was a founder member and from 1984 'Historian' of the Society with responsibility for its archives.

Section F, Visits and conferences, covers the period 1947-1993 and is of particular interest for its documentation of the historical sessions which McIlwain organised at ISN meetings.

Section G, Correspondence, presents an alphabetical sequence of McIlwain's correspondence including significant exchanges with a number of distinguished mentors and contemporaries such as G.R. Clemo, F. Dickens, K.A.C. Elliott, P.G. Fildes, S.S. Kety, H.A. Krebs, Derek Richter and F.L. Rose, and a chronological sequence of shorter scientific correspondence covering the period 1938-1992.

There is also an index of correspondents.

Notes of lectures (on medical jurisprudence), on cases, and on diseases such as material on digestion and on hip disease, 1877-[1885].

Manuscript catalogue of the apparatus used in teaching the natural philosophy class in the Marischal College, Aberdeen.

Manuscript record of experiments labelled 'Laboratory Notes', kept while studying engineering at University College London.

Correspondence, 1887-1925, mainly between Dendy and fellow academics relating to the morphology and classification of sponges, notably with George Parker Bidder, President of the Marine Biological Association of the UK; Professor William John Dakin, Professor of Zoology, University of Liverpool; Francisco Ferrer Hernandez, Musea de Gencias Naturales, Madrid, Spain; Professor William A Haswell, Emeritus Professor of Biology, University of Sydney, Australia; Ernst Hentschel, Zoologisches Museum, Hamburg, Germany; William Abbott Herdman, University of Liverpool; Professor Sydney John Hickson, Emeritus Professor of Zoology, University of Liverpool; Randolph Kirkpartick, Natural History Museum, London; Professor James Herbert Orton, Emeritus Professor of Zoology, University of Liverpool; Joseph Pearson, Director of the Columbo Museum, Ceylon; and Edgar Thurston, Superintendent of the Government Museum, Madras, India. The correspondence also includes letters, 1919-1921, relating to the establishment of a research grant in memory of Harold Row, Dendy's assistant. Papers, 1886-1899, relating to sponge collections, particularly specimens in Australia and New Zealand, and including the dredging records for Port Phillip, Victoria, Australia, 1887-1890. Lecture notes written by Dendy, [1903-1925], including handwritten texts of lectures on 'Echinodermata', 'The development of starfish', 'Holothurioidea', 'Class Gastropoda', 'Mytilus', 'Anodarta cygnea', 'Helix', 'Mollusca', and 'Merozoa', and typescript texts of public lectures including 'The stream of life', given at a Citizens' Lecture in Edinburgh, 1921, and 'The evolution theory today', given at the Liverpool Meeting of the British Association for the Advancement of Science, 1923. Working notebooks, [1886]-1912, mainly containing scientific experiments and observations relating to sponges, notably the Challenger Amphipoda and the Grantia Compressa, and notes on the topographical distribution of, and biographical references to, sponge specimens. Two notebooks, 1917-1919, recording experiments and observations during Dendy's membership of the Royal Society's Committee for the Investigation of Grain Pests. Papers, 1892, relating to The Victorian land planarians [1894] by Dendy, comprising a volume of annotated and revised extracts from that work, and a letter to Dendy from Thomas Steel concerning flatworm species. Printed obituaries of Dendy, 1925-1926. Papers relating to the study of lizard-like reptiles commonly known as Tuatara (the scientific name being Sphenodon), [1897]-1910, including correspondence, 1908-1910, between Dendy and Edward Bles, Elliot Smith, Annie Howes and [William Thompson] Sedgwick, and catalogues, notes and photographs of Tuatara embryos.

Papers of Professor Jean Hanson, 1938-1975, comprising undergraduate lecture notes; drafts for lectures, revised annually, for undergraduate teaching in zoology at Bedford College, 1938-1948; lectures in Biophysics given at King's College London, 1960-1973; research papers, comprising extensive laboratory notebooks and working papers, 1938-1973, which include ideas for research and comments on current and projected experiments as well as records and observations of work in progress; reports on the work of the Muscle Biophysics Unit; drafts for publications, 1950-1973; unpublished invitation lectures and talks, 1956-1973; scientific correspondence, 1956-1973, including letters exchanged with colleagues whilst at conferences or abroad, detailing research progress; 'Emmeline Jean Hanson' by Sir John Randall, reprinted from Biographical memoirs of Fellows of the Royal Society, Vol 21, Nov 1975.

Papers of Martha Annie Whiteley, 1897-1934, comprising notebooks containing notes on a course of practical work for science mistresses by Professor Henry Edward Armstrong at the City and Guilds College, 1897; lectures by Professor Tilden, 1898-1899; lectures by Dr Philip at the Royal College of Science concerning physical chemistry, 1899-1900; notes on analysis of organic compounds, 1899; laboratory notebooks, 1902-1931; lectures concerning practical organic chemistry; elementary organic chemistry, [1922-1926]; papers relating to lecture experiments, 1899, 1913; obituary notices; presentation volume, 1934.

Records relating to the Royal School of Mines and Royal College of Science, 1851-1966, comprising articles on the Museum of Practical Geology; report of the Royal School of Mines Committee, 1902; a history of the Royal School of Mines, 1966; prospectuses, 1851-1907; annual reports, 1882-1906; minutes of the Council of Professors, 1851-1911; lecture accounts, 1851-1881; Normal School of Science and Royal School of Mines student fees, 1881-1883; Royal College of Science student fees register, 1900-1901; staff lists, 1903-1908; entries to lectures, 1851-1879; student entries, 1879-1881; register of passes, 1881-1893; Royal College of Science and Royal School of Mines ledgers, 1893-1896; Royal College of Science ledgers of students, 1897-1908; lecture bills, 1851-1900; inaugural addresses, 1896-1905; Royal School of Mines examination returns, 1851-1881; registers of examinations, 1883-1901; examination results, 1882-1908; apparatus accounts, 1895-1909.

Records of the Department of Physics of Imperial College, 1882-1985, including a departmental history from 1851-1960; papers relating to courses, 1885-1982, including course syllabus, 1885, 1903, 1928; laboratory experiment papers, 1982; research on uranium, 1940-1941; laboratory notes, 1895; papers relating to a departmental photograph, [1893]; lecture notes, 1892;
correspondence, including with the adminstration department, of Professor Hugh Longbourne Callendar, 1908-1929; Professor Robert John Strutt, 1908-1920; Professor Alfred Fowler, 1910-1924; Professor Frederic John Cheshire, 1917-1925; Professor Louis Claude Martin, 1917-1950; Professor Alexander Oliver Rankine, 1927-1937; relating to photography, 1945-1951; Rectors' correspondence, 1955-1980; purchase of equipment, 1965-1974; examination papers, 1933-1969; inventories of apparatus, 1947-1969; students' newspapers, 1985;

papers relating to Astronomical Physics, including reports of the Solar Physics Committee, 1882-1911; demonstrations and practical work, 1889-1931; Spectroscopic laboratory record, 1906-1936, equipment, 1912; examinations notebook, 1883-1921; Astronomical laboratory visitors' book, 1907-1914 (KPA);

correspondence of Professor Herbert Dingle, 1928-1944, principally relating to the acquistion of a spectrograph (KPAB); correspondence of Reginald William Blake Pearse, 1931-1950 (KPAC); papers written by Sir William de Wiveslie Abney (printed), 1874-1917 (KPC);

course booklet for Atmospheric Physics, [1977] (KPM); papers of the Applied Optics Section, including correspondence, 1912-1918; minutes and correspondence of the Technical Optics (later Applied Optics) Committee, 1918-1974; papers relating to events, including open day, 1961; Jubilee celebrations, 1968; 60th anniversary celebrations, 1978; general papers, 1943-1979 (KPT); inventory of apparatus, 1917-1960 (KPTA).

Papers of Charles John Bond, 1883-1939, comprising correspondence with various people, including Lord Joseph Lister, Victor Horsely, Sir Wilfred Grenfell, Stephen Paget, Frank Penrose, Dr Theodore Woods (Bishop of Peterborough), Sir Arthur Keith, Lord Moynihan, Dr William Mayo, Sir Thomas Barlow, Wilfred Trotter, Sir Oliver Lodge, Dr F Gowland Hopkins, Professor G Grey-Turner, Walter Fletcher, Sir Robert Jones, and Dr Whittingham (Bishop of St Edmundsbury and Ipswich), 1883-1939; papers on medical subjects and scientific experiments; notes on topics including immortality, youth and age, and the mind; biographical information; poetry; and a grace.

Extensive papers of Howard Walter Florey, Baron Florey, relating to almost every aspect of his career in science and public life. The scientific materials include a complete run of laboratory notebooks, 1924-1968, files on the work for which Florey is best known, penicillin and antibiotics, 1940-1962, together with papers, research notes and photographs on mucus secretion, traumatic shock and electron microscopy. Florey's writings are preserved in the form of drafts and proofs of published items, together with relevant correspondence. His correspondence indicates the depth of his involvement in the affairs of particular organisations, notably the Oxford University School of Pathology and the Royal Society. The work of Ethel Florey (née Hayter) and Margaret Augusta Florey (née Fremantle) is also present.

Working papers and correspondence of Sir John Henry Gaddum. The scientific material in the collection centres on a run of student and laboratory notebooks for 1922-1965, together with files of notes and calculations on biological assay and other topics. Further papers concentrate on Gaddum's teaching and publications in the form of lecture scripts, typescripts of articles and related correspondence. Material on his administrative work includes correspondence on conferences and organizations, with some Royal Society papers, but also Physiological Society letters, 1936-1941. Non-paper records such as slides and personal souvenirs are also preserved.

Material relating to the use of nitrus oxide, chloroform and ether, mostly notes, including some on an operation carried out on Napolean III, and notes for lectures given by Clover. There is some personal material relating to Clover's education, including some family correspondence.

Papers of Sir David Ferrier, 1873-1913, include his notebooks of experiments, particularly in relation to the cerebral cortex, with sketches and photographs, 1873-83; Drafts of addresses given by Ferrier, on the nature and physiology of tabes, 1906, and on the cerebro-spinal fluid, 1913.

Notebooks of Frank Louis Warren made whilst a student at the Royal College of Science (Imperial College), 1925-1927, containing experiments, drawings and tables relating to chemistry and physical chemistry.

Records created by the Registry of Imperial College relating to students, 1909-1998, notably correspondence concerning Intercollegiate courses, 1948-1956; fees, 1909-1966, including student's apparatus fees, 1939-1973; Rector's correspondence, 1959-1962; alphabetical list of students, 1970-1998; correspondence relating to students, 1964; Committee on education for engineers, including minutes, 1959-1952; papers of the Board of Studies Committee relating to conditions of admissions, 1945-1947; undergraduate courses in Mathematics, 1962-1966, Geology, 1965-1967, Chemistry, 1964-1969, Physics, 1961-1969; London County Council and Board of Education scholarships, 1925-1940; students' loan fund account ledger, 1921-1942; liason with schools, 1964-1977; student statistics, [1920-1987]; papers relating to student surveys, 1933-1934, 1960, 1963.

Papers of John Croft, 1876, comprising a manuscript copy (by an unidentified scribe employed by Croft), of a work by Peter Redfern (1821-1912) FRCS, titled A normal nutrition in the human articular cartilages (1850), including an additional section titled Experimental Researches on the Lower Animals.

Papers relating to Giovanni Aldini, 1802, comprising an illustrated notebook by an unknown hand, recording experiments on the galvanic fluid by Giovanni Aldini, at the Theatre of Anatomy, Great Windmill Street, Haymarket, 20 Dec 1802. The front cover of the notebook was written by William Clift.

Papers of Sir James Dewar include: (DI-DII) correspondence and general papers relating to membership of institutions, scientific work and the views of individuals, written papers. (DIII) Biographical papers and cuttings 1911-1925 and personal and (DB11) biographical papers c.1891-1924, relate to Dewar and his work. (DIII) Photographs 1890-1894, relate to various aspects such as rooms in the Royal Institution of Great Britain (RI) and apparatus; (DE15) photographs and reprints including discourses 1875-1923 include an album of photographs of soap films, reprints of Dewar lectures at the RI, notes on courses and lectures by Dewar and others such as John Tyndall. Notebooks relate to (DIII) experimental observations 1907-1909; (DB4) notebooks on radiation, dissociation, analyses; (DB5) low temperature work 1874-1919, notebooks and other papers; (DB6) spectroscopy notebooks 1879-1912; (DB7) rare gases 1885-1923, notebooks and papers; (DB8) laboratory apparatus notebooks, 1881-1905; (DB9) notebooks and papers on bubbles, 1917-1923; (DB10) notebooks on the work of Marcellin Berthelot and Henri Moissan, 1907; (DE10) lecture notebooks and experimental notes 1869-1918, relate to topics such as hydrogen, thermal values, latent heat and decomposition of gases. Notes on lectures include (DIV) lecture notes and lists 1878-1891, relates to soap bubbles, and Christmas lectures at the RI; (DB3) lecture notes 1877-1906, relates to lectures at the RI; (DE16) lecture notes and correspondence 1885-1940, relates to lectures at the RI including Christmas lectures and correspondence of various recipients particularly with William J. Green. (DE14) Discourses 1894-1923, relate to the Friday Evening Discourses at the RI as well as other notes on experiments. Various forms of notes include: (DB1) general laboratory notes 1864-1923, on temperature, thermo electric properties, analysis of water; (DB2) sound experiments; (DV) notes on scientists and scientific work 1845-1903, relate to Dewar; (DE1) experimental notes 1904-1922 and (DE2) 1919-1923, relate to topics such as dielectric constants of liquid hydrogen, soap films, vacuum tubes, radium, low temperature and radiation from the sky; (DE3) laboratory notes 1897-1930, (DE4) 1914-1920, (DE7) pre-1900 and (DE8) 1875-1910, relate to topics such as silvered vacuum flasks, specific heats, diffusion, apparatus, charcoal absorption and spectroscopic examination of gases; (DE5) bubble measurements 1815-1822, notes and observations; (DE13) experimental notes and correspondence 1893-1922, relate to topics such as densities at low temperature, charcoal, soap film and gases; (DE6) miscellaneous experimental notes 1878-1922 and (DE9) miscellaneous notes 1871-1925, relate to topics such as critical temperature of gases, radiation curves and bubbles. (DE11) Reprints 1866-1913, relate to issues such as Friday Evening Discourses at the RI, the Michael Faraday Centenary of 1891, Christmas lectures at the RI and notes and reports on experiments. (DE12) Royal Institution 1885-1924, relates to messages and letters to, from or concerning Dewar, his role at the RI and general administrative issues. (DE17) Diplomas, drawings and graphs relate to Dewar's Fullerian Professorship at the RI, apparatus and experiments. (DG1-DG3) W. J. Green papers include correspondence, notes, photographs and notebooks on experimental discussions and personal issues such as health. (DCI) Scott controversy 1911, Gordon case 1912-1917, (DCII) early Scott case 1891-1892 and Ruhemann controversy 1890-1891, correspondence and papers. (DVI) J. E. Petavel papers - St Louis exhibition 1904, relates to the reproduction of Dewar's low temperature work for the exhibition with notes on the exhibition. (DVII) War work 1915-1918, includes letter and papers on work for the war effort, World War One.

The papers are not extensive and consist almost entirely of laboratory notebooks and working papers relating to his early work on molecular reactions and gas reactions, 1919-1938. There are also notes and reports of work on respirator design undertaken by Hinshelwood and his team for the Chemical Defence Board, Ministry of Supply, during the Second World War.

Letters and other Papers of the Hon Robert Boyle. The Letters cover Boyle's correspondence; in addition to the letters by scientists such as Hartlib, Beale, Southwell, Wallis and Cole, the series contains letters from members of Boyle's family (Viscountess Ranelagh in particular). There are 37 letters of Boyle's preserved, and substantial blocks of papers from religious figures such as Robert Sharrock. The Papers cover his philosophical, scientific, theological and other interests, and cover most aspects of his life and works.

Papers relating to her life and career, 1904-1948, including correspondence and notes, 1904-1906, mainly relating to experiments by Berridge on the fertilisation of Carpinus Betulus (European Hornbeam), and the publication of a paper on the subject by the Linnean Society, notably including correspondence with Professor Margaret Jane Benson, Head of the Botany Department at Royal Holloway College, and a copy of 'Contributions to the embryology of the Amentiferae part II: Carpinus Betulus' by Berridge, Benson and Elizabeth Sanday, [1905]; correspondence, 1912, between Berridge and Professor Margaret Jane Benson, on the collection of new flower samples and the prospective reading of their Amentiferae paper in Dundee; research notes by Berridge, 1910-1948, on a variety of botanical subjects including Carpinus and agglutination, mainly comprising notebooks, notes on articles and experiment notes; notebook, 1948, belonging to Professor Elizabeth Marianne Blackwell, Head of the Botany Department at Royal Holloway College, containing obituaries of Berridge from the Proceedings of the Linnean Society, 26 Nov 1948, and Nature vol 161, 17 Jan 1948, with a list of Berridge's papers.

Papers relating to Smith's academic career, [1929-1970], including manuscript and typescripts lecture notes on various scientific topics, mainly chemical experiments, equations and theory, personal notebooks containing details of scientific papers by others, notes on famous scientists, and a copy of Smith's DSc thesis on 'Studies in intensive drying and related phenomena; manuscript and typescript drafts and fair copies of scientific papers by Smith for publication; index cards of chemicals; correspondence with academics and industrialists.

Papers of Emmeline 'Lena' Pike, comprising her notebooks on nature study, containing illustrations, pressed leaves and flowers and notes on experiment with bulbs, compiled whilst a student at Avery Hill College, 1907-1909.

Although the collection is by no means comprehensive, there are interesting records of many aspects of Wilson's career.

Section A. Biographical: Brings together material relating to obituaries, tributes, honours and awards. Includes Wilson's account of his First World War experiences and his assessment of his scientific publications. Section B. Research: Although not extensive, provides documentation of a number of Wilson's principal interests including the Salmonella group of bacteria and milk hygiene. There are three laboratory notebooks with experimental data covering the period 1919-45. Section C. Public Health Laboratory Service (PHLS): Relates chiefly to the unpublished history written by Wilson after his retirement as Director of the PHLS. There is also a little material relating to laboratory design and equipment and PHLS personnel. Section D. Lectures and publications: The most substantial in the collection. There are records of Wilson's lectures for a period of forty years from 1944, extensive documentation of the later editions of Principles of bacteriology and immunity, and editorial correspondence and papers for the British Journal of Experimental Pathology and the Journal of Hygiene. Section E. Societies and organisations: Documentation of Wilson's association with ten British organisations including the Medical Research Club, Medical Research Council and Veterinary Club. The Medical Research Council material relates to the Working Party on Tristan da Cunha which was set up to supervise medical investigations when the inhabitants were evacuated to Britain after the island's volcano erupted in 1961. There is also material relating to the Research Foundation, Chicago, which specialised in tuberculosis research, on whose medical advisory committee Wilson served. Section F. Visits and conferences: Records of a number of overseas trips in an advisory capacity for the World Health Organisation, including to Ethiopia 1964, Iraq 1965, Iran, Sudan and Egypt 1971 and the Philippines 1972, and records of international microbiology congresses. Section G. Correspondence: Although not extensive, includes a chronological sequence of scientific correspondence, 1930-1987, Wilson's collection of autograph letters addressed to Topley and himself, and references and recommendations. Section H. Photographs: Photographic records of Wilson, colleagues, conferences and PHLS laboratories. Section J. 'Biographical History of Bacteriology': Manuscript of Wilson's history, with correspondence about publication.

Papers of Sir Ambrose Fleming, including extensive sets of laboratory notebooks which include accounts of experiments on carbon filaments carried out by Fleming when he was adviser to the Edison and Swan Electric Light Company, of tests on electrical and photometric standards carried out in the Pender Laboratory at University College London, and of experiments on valves and other aspects of wireless telegraphy; notes of lectures attended by Fleming and notes for lectures given by Fleming; patent specifications and papers on litigation over them; newspaper cuttings and other compilations by Fleming; papers on awards and distinctions; biographical notes; and correspondence. 500 of the 521 volumes are printed works associated with the collection.

The papers consist of notes and notebooks of William Bayliss' experiments. There is also correspondence, press cuttings and photographs, a great part referring to the 'Brown Dog Affair' of 1903 and to other disputes between anti-vivisectionists and University College London.

Two lists of specimens, instruments, utensils, drawings, etc, illustrative of comparative anatomy and zoology. Both dated 12 January 1850.

This collection contains a single manuscript volume, the 'Naval Surgeons Casebook'. The volume begins with details of cases, symptoms and cures of Nathaniel Bedford's patients at St George's hospital during 1781. The rest of the volume contains descriptions of cases, sickness, and treatments during his travels whilst a ship's surgeon in the West Indies during 1781-1783.

Papers of the Arden Philosopical Lectures, c 1775-1800, comprising a volume of manuscript lecture notes titled Philosophical Lectures delivered by Mr Arden at Dursley. The notes discuss topics such as electricity, including the work of Dr Benjamin Franklin with lightning rods. The notes also cover the subjects of air and gases, commenting on the work of Dr Joseph Priestley relating to 'fixed airs' (carbon dioxide), 'inflammable air' (hydrogen), the effects of 'phlogiston' on the air, and 'dephlogisticated air' (oxygen). The volume is undated; Priestley's paper on his experiments with airs and gases was published in 1775.

The papers are extensive, relating to almost every aspect of Blackett's career in science and public life. There is biographical and personal material including large numbers of letters of congratulation received on the occasion of the various scientific and public awards and honours with which Blackett's achievements were recognised. There are records of his work on particle disintegration, cosmic rays, astrophysics and magnetism in the form of laboratory notebooks, working papers, correspondence, lectures, publications and broadcasts. There is documentation of his activities on various defence projects and as a member of government committees before, during and after the Second World War. Blackett's political interests are represented by material relating to the Association of Scientific Workers, Labour Party discussion groups on science and technology policy and the Ministry of Technology instituted after the Party's 1964 electoral victory. There are records of a wide range of science-related interests such as the history of science and technology, science, education and government, and nuclear weapons and disarmament, and of his overseas activities including material relating specifically to India and that concerned with matters more generally affecting developing countries.

A few lacunae in the surviving material have been identified. There are no documents relative to Blackett's service with the National Research and Development Corporation or the Department of Scientific and Industrial Research and, of his correspondence during the Second World War, only that for 1942 survives.

Records of the Department of Zoology of Imperial College, [1851]-1979, including a departmental history from 1851-1939; Department of Entomology 1927-1965; papers relating to courses, including student register of attendance at lectures, 1909-1912; lectures on invertebrata, 1950-1959; staff papers including pratical work, examination papers, 1931-1971; examination results, 1950-1959; practical instruction sheets; correspondence of staff, including Professor Adam Sedgwick, 1909-1911; Professor MacBride, 1911-1934; Professor Lefroy, 1912-1925; Professor T R E Southwood, 1967-1978; Professor James Watson Munro, 1929-1954, including Congress of Entomology at Berlin, 1938, personal papers; applications for the Chair, 1908; papers relating to the Huxley Library and Museum, 1963-1965; Rectors' correspondence, 1955-1979, including relating to Ford Foundation grant, Electron microscope, Chair of Zoology; correspondence concerning the fumigation of carnation cuttings, 1953-1962; Department of Zoology field work, 1938 (KZ);
pamphlets relating to Entomology, including courses and training, [1917-1974]; Dr T A M Nash's notebooks on a course, 1923-1926; notes on lectures by Professor James Watson Munro concerning the anatomy and physiology of insects, 1933; departmental history, 1995 (KZE).

The papers consist primarily of Daly's meticulous records of experiments, covering the period 1919-1965, in a series of large notebooks, all indexed by him, some of which represent compilations of material gathered over many years from a variety of sources. There is also correspondence with, and biographical information regarding, several eminent physiologists including Sir Edward Sharpey-Schafer and Sir Charles Sherrington. William Sharpey is represented by five autograph letters to Sir Charles Lyell, 1858-1871.

This small but important collection is concerned with the research and development of penicillin. Heatley's laboratory notebooks (A.1-3), October 1939-June 1941, and sketches and diagrams of apparatus, 1941 (C. 1-5) form the core of the collection. The famous experiment of 25 May 1941 on the 'Curative Effect of Penicillin' on mice is recorded in notebook A.2. There are also diary entries, narratives and explanatory notes, some prepared by Heatley expressly for the collection. The correspondence and reports exchanged between Heatley and Florey (section D.) is a set of photocopies, included to provide a complete account of the collaboration between the two on the penicillin project.

Much of the collection is made up of diaries and notebooks relating to expeditions sent to Africa by the Liverpool School of Tropical Medicine to study diseases such as malaria and trypanosomiasis. From Todd's subsequent career there is also material on journeys to Western Canada to study Swamp Fever in horses and to Poland to study Typhus, some general notes on tropical diseases, a laboratory notebook on experiments with fever ticks and a paper on the Congo Free State as a political unit. The dates covered are 1901-1920. A final block of material consists of letters and loose papers including sketches, covering 1890-1949.

Papers of Professor John Percy, comprising letters to Richard Smith, of the Metallurgy Laboratories, Royal School of Mines, 1853-1860, relating to work at the laboratories; notes and correspondence relating to experiments on glass, 1840-[1888].

Papers of Professor Alfred Fowler, 1903-1935, including observations on the sun, 1903-1910; laboratory notebooks, 1906-1913; telescope design, 1906-1910; miscellaneous correspondence, 1916-1935.

The papers include laboratory notebooks dealing with Bawden's research on various plant viruses, and in particular his collaborative work with N.W. Pirie and with A.A.P. Kleczkowski. There is also a detailed exchange of correspondence with Pirie on research in progress, 1937-1940. (Pirie moved to Rothamsted as Virus Physiologist in 1940 when Bawden became Head of the Plant Physiology Department.) There is a wide range of correspondence, with individuals and institutions. It deals with scientific research and problems including viral nomenclature, lectures, conferences, publications, Bawden's reports on research projects, grant applications and appointments. The correspondence relating to Bawden's overseas visits as adviser or lecturer is mainly after 1958 and is sometimes accompanied by Bawden's reports.

Laboratory notebooks and records of C T R Wilson.

Letters from Sir Robert Moray to his friend Alexander Bruce, Earl of Kincardine, also known as 'The Kincardine Papers'. Bruce was sick of the ague in Bremen for part of this time, and the letters were written to alleviate the tedium of of Bruce's illness, hence ranging over topics which might not otherwise have been the subjects of correspondence. They include accounts of chemical experiments in his laboratory, his interest in magnetism, medicine in all its aspects, horticulture, fuel, whale fishing, its risks and profits, coal mining, water wheels and tide mills, stone quarrying and the various qualities of different stones, the pumping works needed for undersea coal mines at Bruce's home at Culross in Fifeshire, even to the trees whose wood was best for pipelines, and the diameter of the bore best suited to the purpose. Familiarity is shown with mathematical and surveying instruments, with music, and all sorts of mechanical devices and especially clocks and watches, more particularly the taking out of a patent in respect of a clock for use at sea for finding longitude. Bruce is advised on the choice of books over a wide range of subjects. Moray includes anecdotes to amuse his ailing correspondent; he describes his quiet life and is enthusiastic about many of his chemical experiments. Notable at the end of the letters Moray added what he described as his Masonic signature - a pentagram which also occurs in his crest.

Papers of Sir Charles Alfred Ballance, 1896-1935, comprising notes of experiments, 1922-1935; original drawings for publications and papers, 1896-1934; and lectures, reports, and notes on surgery, c 1909-1934.

Experimental notes, working papers, correspondence and lecture summaries compiled by Charles Wheatstone, 1836-1875, and photographs collected by him in that period. Notably including papers relating to the development and testing of the telegraph, [1836-1960]; descriptions of experiments and test results concerning the measurement of electromotive forces and electrical potential, [1840-1875]; experimental observations on the nature of magnetism, electricity and thermodynamics, including electromagnet design, batteries and dynamos, [1834-1855]; working papers relating to optics including experiments into refraction, colouration of compounds and polarisation, [1850-1875]; drafts of lectures on sound and musical instruments prepared by Wheatstone, [1832-1837]; material relating to the management of the Wheatstone collection of scientific instruments and library, 1890-1992; biographical material relating to the life of Wheatstone, the invention of the telegraph and Wheatstone's musical instrument manufacturing business, with unrelated newspapers, 1757-1975; stereoscopic photographs and glass negatives taken by Roger Fenton, Samuel Buckle, Jules Duboscq and others, featuring landscapes, still lifes, panoramic scenes of cities including Paris and Moscow and the interior and exterior of the Crystal Palace, Hyde Park, Sydenham, 1851, and especially the Exposition Universelle, Paris, 1855, [1850-1901]; artefacts on loan from Department of Physics, King's College London, including telegraph apparatus, a nail fiddle and other prototype musical instruments, [1834-1875]; exhibition of scientific and musical instruments, [1834-1875].

Papers, 1959-1972, relating to publications by Tolansky on the subject of interferometry and diamond physics, including correspondence, 1959-1964 with publishers and editors; manuscripts, typescripts and proofs of articles, books, reviews and papers on scientific subjects, 1959-1972, including papers, correspondence and press cuttings on the demand and merit of women physicists, published in the Sunday Times, 1963, and book reviews written by Tolansky, including some press cuttings and covering correspondence, 1959-1963; copies of unpublished research papers, [1934-1947]. Miscellaneous material including rough notes, booklists and illustrations of crystal structures, 1952-1962, and photographs of experiments, [1934-1973].

Papers of George Field, comprising photographs and colour slides of five notebooks, [1804-1825], covering all aspects of colour making.