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Papers of William Birmingham Costello, 1779-1849, comprising information mostly relating to his publication The cyclopedia of practical surgery, including an etymological and critical terminology; detailed descriptions of instruments and apparatus; a copius bibliography; and an historical view of the progress of the science to the present day: ... a complete digest, alphabetically distributed, of the doctrines and practice of surgery/ conducted by William B Costello; assisted by numerous distinguished writers; illustrated with numerous engravings and wood-cuts. Volume 1: ABD-DYS (Sherwood, Gilbert & Piper: London, 1841) containing correspondence, 1829-1849; drafts, proofs and publication details, 1837-1841; and personal notes and papers, 1779-1844.

Papers of Sir William Blizard, 1785-1826, comprising a volume, possibly by Samuel Helbert Israel, titled Lectures on Anatomy, Phys[iology] and Surgery by Wm Blizard RS-SA, containing manuscript notes of 27 lectures given by Blizard; letters, including a letter to L [?] Hoect, 3 Mar 1785; manuscripts, including a manuscript describing particular cases, Oct 1816; a manuscript titled The dissection of a dislocated thigh with fractures of some parts of the bones of the pelvis and other injury, July 1826. by Blizard; a manuscript copy of correspondence with Mr F C Daniel regarding Blizard's refusal to provide a certificate proving attendance as a pupil at the London Hospital, 27 Jun 1817; and an autograph signature.

Papers of Charles Spence Bate, c 1857, comprising 2 manuscript notebooks containing tracings and lists of crustacea; and a manuscript index and notes referring to various species of crustacea.

Papers relating to the Artificial Limb Centre, Pune, India, 1956, comprising an album containing photographs and descriptions of patients with artifical limbs.

Hunterian letters, 1775-1793, comprising a photograph of the donor, Professor George Grey Turner (1877-1951); letter from John Hunter of London to Edward Jenner, 24 May [1775], regarding a scheme to teach Natural History including both Human and Comparative anatomy, and requesting Jenner to assist him by coming to London; letter from John Hunter of Leciester Square to Robert Adam, 31 May 1789, concerning a testimonial for his nephew, Dr Baillie, for the position of Physician at St George's Hospital; letter from John Hunter to an unidentified correspondent, 15 Jan 1793, concerning natural history specimens; letter from William Hunter of Windmill Street to an unidentified correspondent, 6 Nov 1779, concerning some coins, and the dissection of a body where death was caused by sudden contraction of the heart; and a letter from Anne Home Hunter of Lower Grosvenor Street, to an unidentified correspondent, regarding collection of a manuscript.

Papers of Thomas Keate, 1776-1816, comprising a volume of manuscript notes by Keate, taken at lectures on surgery by John Hunter, 1776; lectures by Thomas Keate, 1776-1777; and a letter from Keate of the Royal Hospital, Chelsea, to George Chandler, Chairman of the Board of Curators, 23 Oct 1816, describing the presentation of the volume to the College, upon the request of the Court of Assistants. The letter explains that the notes were taken over a period of years, and that afterwards, after consulting with the notes of a friend, Dr John Jebb, they were collated and improved. He also notes that he tried to convey the sentiments of the lectures by verbatim quotation from Hunter.

Papers of Charles Wilkinson, 1787-1788, comprising a volume containing manuscript notes by Wilkinson, of lectures given by John Hunter. Including a note by William White Cooper written in 1838, containing information about the author, the lectures, and how he located the manuscript.

Papers of William Hunter, mid to late 18th century, comprising notes taken by unidentified authors, of lectures by William Hunter; and notes taken by unidentified authors, of lectures by William Hunter and William Hewson, c 1772.

Papers of Henry Gore Clough, 1779-1792, comprising a volume titled Lectures Anatomical and Chirurgical by William Hunter, Physician Extraordinary to her Majesty, Professor of Anatomy at the Royal Academy, and Fellow of the Royal and Antiquarian Societies. 1779. Volume 1st, containing manuscript notes by Clough of lectures by Hunter, including a copy of a portrait of Hunter by J Thornwaite; a volume titled Lectures Anatomical and Chirurgical by William Hunter, Physician Extraordinary to her Majesty, Professor of Anatomy at the Royal Academy, and Fellow of the Royal and Antiquarian Societies. 1779. Volume 2nd, containing manuscript notes by Clough of lectures by Hunter, covering topics such as embalming, c 1779. Including patient case notes, 1779-1792, and a letter from Mr Wyatt to Clough, 14 Apr 1792, regarding publishing a case; and a volume titled Lectures Anatomical and Chirurgical by William Hunter, Physician Extraordinary to her Majesty, Professor of Anatomy at the Royal Academy, and Fellow of the Royal and Antiquarian Societies. 1779. Volume 3rd and sub-titled Lectures on the Gravid Uterus by William Hunter, MD and FRS, 1779, containing manuscript notes by Clough of lectures by Hunter.

Papers relating to Sir Everard Home and John Abernethy, 1811-1812, comprising a volume of manuscript notes by an unknown hand, titled Notes taken at Mr Home's Lectures on the principle operations in surgery, October 1811 and Notes taken at Mr Abernethy's Lectures on Surgery, 1812.

Papers of William Cheselden, 1749-c 1990, comprising a deed of sale for the copyright of Anatomy of the Human Body by William Cheselden, to the publishers, Charles Hitch and Robert Dodsley for £200, dated 8 Apr 1749; two receipts for shares, dated 19 Oct 1771 by W Woodfall, for one 16th share in Cheselden's Anatomy to Mr Dodsley, and dated 22 Oct - 25 Nov 1778 by the trustees of Mr William Nicoll, also for one 16th share of Cheselden's Anatomy to James Dodsley; and photographs of the original drawings for Cheselden's Osteographia, 1733. The drawings for the vignettes in the Osteographia were by Jacobus Schijnvoet of Amsterdam, and the drawings for the plates were by Gerard van der Gucht. The photographs are mounted on card and numbered on the back.

Papers of Thomas Appleby, 1814-1815, comprising a volume of manuscript notes taken by Appleby at lectures by Sir Astley Cooper, titled Mr Astley Cooper's Surgical Lectures Continued 1814-1815, Vol II. Including a contents list for volumes 1 [not located at the College] and 2, and notes on Henry Cline's lectures on operations, and topics such as kidney disease.

Papers of George Ray, 1815-1816, comprising a volume of manuscript notes taken by Ray at the lectures of Sir Astley Paston Cooper, titled Lectures on Surgery, Delivered at the theatre of St Thomas's Hospital by AP Cooper, Esq in the years 1815-1816; and an undated newspaper cutting titled 'The Country Surgeon (A True Bill)' containing a poem about the life and work of a country surgeon.

Papers of John Blackman, 1822, comprising a volume of manuscript notes written by Blackman, in a printed volume outlining the lectures of Sir Astley Cooper titled Outlines of the Lectures on Surgery delivered by Sir Astley Cooper, Bart. at St Thomas's and Guy's Hospitals. Printed for the use of students. London 1822 .

Papers relating to North American Indian Crania, early 19th century, comprising a drawing titled 'North American Savage Wabash Nation. Female. Drawn by Charles Alexandre Lesueur'; a drawing titled 'North American Indian Wabash nation. Male. Drawn by Charles Alexandre Lesueur'; a drawing titled 'North American Indian. Paunee tribe. Missouri. Drawn by Charles Alexandre Lesueur'; a drawing titled 'Jack Snake. Cherokee Chief, aged about 23. (side view) Drawn by Charles Alexandre Lesueur'; a drawing titled 'Jack Snake. Cherokee Chief. (front view) Drawn by Charles Alexandre Lesueur'; a drawing titled 'Head of a Carib. Drawn by F C Lewis from the skull in the museum of the Royal College of Surgeons'; a drawing titled 'Head of a Carib of the Island of St Vincent. Drawn from the original' (in the museum of St Thomas's Hospital), by FC Lewis; a drawing titled 'Head of a negro, drawn from the original in the museum of St Bartholomew's Hospital by F C Lewis'; a drawing titled 'North American Indian from Columbia River, N. West Coast' by B A Vitry; and a drawing titled 'North American Indian from Columbia River, North West Coast' by B A V[itry].

Papers of John Howship, 1799-1805, comprising a volume of manuscript notes by Howship, titled John Howship March the 8th 1799, taken at physiological lectures by Matthew Baillie, lectures by William Cruikshank, and including notes on dissections and cases, 1799-1805; a volume of manuscript notes by Howship, titled John Howship October 1799, taken at lectures by William Cruikshank, Sir Everard Home, Mr Crichton, and Mr Wilson, including notes of John Heaviside's cases, 1799-1803; a manuscript copy by Howship, of Matthew Baillie's Morbid Anatomy, including detailed drawings of the plates; and a list titled Mr Howship's Preparations, made by William Augustus Hillman of preparations purchased at Howship's museum and descriptions taken from Howship's catalogue.

Papers of Lyon Playfair, 1857, comprising a letter from Lyon Playfair to Richard Owen, 22 Jun 1851. Relating to the examination of a specimen of charcoal.

Papers of Florence Nightingale, 1876-1956, comprising notes on sick nursing addressed to the editors of Every Girl's Magazine, 19 Nov 1881; photographs of autograph labels for Nightingale's collection of shells. Including a letter from G Ellis Flack from Nottingham University, where the shell collection is now housed, 1951; autograph in pencil; correspondence with Dr John Shaw Billings, 23 Oct 1876-4 Dec 1876, requesting advice from Nightingale on the building of a hospital in Baltimore by the Johns Hopkins Trust; and 2 letters relating to the efforts to locate the correspondence, Apr-May 1956.

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 George Perkins, 1908-1980, comprising 2 volumes containing correspondence, testimonials, and certificates relating to his education and professional life, 1908-1957; a folder containing photographs, a typescript, and correspondence relating to the Inaugural George Perkins Lecture, delivered by Professor Maurice Muller, (Professor of Orthopaedic Surgery at the University of Bern), at St Thomas' Hospital on 1 Oct 1971; a reprint of The Hugh Owen Thomas Memorial Lecture 1946, delivered in the Liverpool Medical Institution by George Perkins on 11 Jul 1946; an envelope containing 11 reviews for the book Orthopaedics, written by Perkins, 1961, and a review for the book Fractures and Dislocation, written by Perkins, 1953; a volume containing a photograph of Perkins, signed by his former colleagues and friends; 3 photographs of Perkins, 1927-1973; obituaries and letters of condolence addressed to George Perkins daughter, Elizabeth, 1980.

Papers of Samuel Crompton, 1841-1845, comprising a volume containing detailed lists of the blind people in the Manchester, Salford, and Chorlton Union Workhouses, 1841. Including a copy of a report by Crompton, sent to Dr Lyon Mayfair, 10 Dec 1843; and correspondence relating to blindness.

Papers of William Cotton, 1817, comprising a volume containing a detailed manuscript list of approximately 200 books, presented by Cotton, indicating books for the College library, 1817; and a sheet of paper containing a list titled, A Catalogue of Books sent to W. C. Esq., appearing to list the same books as the volume.

Papers of Robert Keate, 1847, comprising a volume containing a detailed, alphabetical manuscript list of books presented to the College Library by Keate; and a letter written on Royal College of Surgeons of England Library headed paper, from Thomas Stone, to Keate, 13 Jun 1847, relating to books that the Library does not already possess.

Papers of Eleanor Davies-Colley, 1932, comprising a letter of reference by Davies-Colley, written on the headed paper of 16 Harley Street, 23 Mar 1932. Recommending Sister Perry, who worked at the South London Hospital for Women, 1929-1930. Including a note by Perry.

Papers of Lady Caroline Amelia Owen, c 1790-1835, comprising a letter from Joanna Baillie, 1831, including a transcript of a sonnet by William Wordsworth; a watercolour sketch of Keeper's House, Hyde Park, c 1790; a watercolour of execution dock, by William Clift, 1816; a pen and ink sketch of the opening of the theatre at the Royal College of Surgeons, by William Clift; a sketch of Caroline Clift by her father; a pencil portrait of Eugenius Roche, by William Home Clift, 1824; a printed caricature of Richard Owen lecturing, by Richard Doyle; a volume titled Select Sentences or a Collection of Moral Precepts by John Gregor, 1792; a pencil drawing of three pigs by 'R H'; a pen and ink sketch showing Oxford Street with placards referring to Owen's researches, by Robert Lee; an unfinished watercolour titled 'Sketch of church and castle, Lancaster, from my mother's house (the procession of the judges was to have filled the foreground)', by Richard Owen, 1835; a volume of French verse titled Envoi a Caroline by Eugenius Roche, 1829; a flyer for Mr Mears' Benefit at the Theatre Royal, Drury Lane, 25 Jun 1839; and a list of 'books consulted in the progress of the catalogue of the Gallery'.

Papers of Allen Thomson, 1829-1877, comprising a manuscript copy of Thomson's first paper delivered to the Medical Society, titled On the foundation of the egg and the evolution of the chick, c 1829; a volume of manuscript notes, titled Synopsis of Lectures on Physiology; Session 1842-1843 by Allen Thomson; copied from the boards by James Keith; synopsis of 95 physiology lectures by Thomson, taken by D R Haldane, 1844-1845; volume titled Capacity of Crania; Bulk of Skulls, c 1850-1877, including measurements, notes and lists; travel journal kept by Thompson whilst abroad with his father in 1833, including visits to London, Rotterdam, Germany, Switzerland, Italy and France. Containing his 'passport' signed by the Lord Provost of Edinburgh; manuscript notes from lectures on animal electricity given to Professor William Thomson's class, 29 Mar 1851, and notes on animal motion given to Dr A Buchanan's [?] class, Apr 1850; manuscript notes on 'electrical fishes', c 1853; manuscript notes of 19 lectures on comparative anatomy of the nervous system [May-Jul 1857]; manuscript notes of 12 lectures on the comparative anatomy of the organs of nutrition in Vertebrata, [May-Jul 1858]; manuscript notes of 15 lectures on the development and comparative anatomy of the brain, [May-Jul 1862]; manuscript notes of 'a few remarks made upon specimens of skulls exhibited at a conversazione of Philos. and Eng. Societies in Queen's Rooms on 11th Feb. 1863. Illustrating the relations between the head of man and that of animals'; manuscript notes of lectures on the nervous system, [1864]; manuscript notes on the nervous system, c 1857-1865; manuscript 'notes and tables connected with the races of mankind'; manuscript 'tables of the animal kingdon and races of man'.

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.

Papers of Sir William Robert Grove include correspondence to and from various recipients, 1839-1877 (GR1-GR3); Grove papers: printed and manuscript drafts, including notes on a tour of Wales (possibly by his father, John Grove); notes on electricity and on electrolytic and disruptive discharges, 1848; notes on magnetism and heat; notes on the influence of light on polarised electrodes, 1856; a dialogue of continuity; drafts for a presidential address, 1866-1867 (GR4).

Papers of William Hasledine Pepys include correspondence to and from various recipients, relating to various issues such as surgical instruments, club nominations and the Royal Institution of Great Britain (RI), c1805-1862 in: Pep A (Green Folder), Pep B (Brown Folder), Pep C (1836 Folder), Pep D (Autographs), Pep E (Miscellanea). Pep F (Royal Institution) is a bound volume containing various notices of meetings, proposed bye-laws and accounts relating to the RI, 1806-1810.

Royal Society account books, 1660-2004, falling into two chronological groups; the first series contains the early accounts for the Royal Society, 1660-1768. Much of this material deals with the financial state of the Society during the term of office of James West, and represents the administrative work of the two Library Keepers/Clerks, Francis Hauksbee and Emanuel Mendes da Costa. The second group consists of cash-books and ledgers of the 19th and 20th centuries, 1867-1976. These deal with the Society's general finances, as well as its administration of the Government Grant and various Trust Funds. A third section contains copies of the Royal Society's Annual Accounts - both signed and unsigned.

A biographical listing of the Fellows of the Royal Society 1663-1940 in the form of a sheaf catalogue compiled by William Bullock. Also includes other items, included from annotated copies of the 3rd and 4th editions of 'The Record of the Royal Society', from which the Roll derived its arrangement: lists of Medical Fellows, and Fellows who did not sign the Charter Book: and biogrphical accounts of the Auldjo family, with various rough notes by Bulloch. The Roll provides a chronological list of the Fellowship by date of election. It records the Fellow's name as it appeared in 'The Record' and in a corrected form, giving the date of election and positions held in the Society. The Roll also provides a short biography based on entries in standard printed works of reference, (such as 'The Dictionary of National Biography', Cockayne's 'Peerage' and 'Baronetage', 'The Gentleman's Magazine', 'Munks Roll of the Royal College of Physicians', Boase's 'Modern English Biography', and the volumes of 'Who's Who' and 'Who Was Who').

The correspondence, papers and diaries of Sir Charles Blagden. Blagden's papers are interesting on several levels, generally for his close contact with European men of learning, and his relationship with Sir Joseph Banks. Blagden's professional researches are represented by medical notes in the boxed sequence. These are grouped with papers on other subject interests, including linguistics, e.g. a draft Tahitian-English dictionary, compiled from conversations with Omai, whom Blagden inoculated after Omai's voyage to England with James Cook. Blagden's interest in antiquities and travel is documented by diary entries, as is his intercourse with fellow scientists, particularly those associated with the founding of the Royal Institution.

Papers of Hugh Christopher Longuet-Higgins FRS (1923-2004), always known as Christopher, include correspondence, lecture notes and papers giving testimony to a long and varied career of over 50 years.

Minutes of the meetings of Council from 1663, concerned with the business and administration of the Society. Entries record discussions of all matters relating to the Society's constitution, activities, awards, funds, bequests, buildings, and staff. The Council Minutes exist in three main forms. The Original Minutes (currently 75 volumes, from 1663) were copied in the manner of the Journal Books until 1822 (8 volumes, 1663-1822). From 1832 the Minutes were printed for distribution to Council Members, and bound sets retained by the Society. Printed agenda for Council meetings have been pasted into bound volumes and annotated since 1950 (currently 24 volumes, 1950-1975). Papers have been kept separately since 1945.

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.

Some correspondence, papers, notebooks and publications of Sir James Hopwood Jeans. Early manuscripts in the series relate to Jean's education at Trinity College, Cambridge, in the form of early lecture notebooks, largely on mathematical topics. A collection of letters, 1901-1907, documents his treatment for tuberculosis at Ringwood Sanatorium, where he completed work on the theory of gases; correspondents included G H Hardy and Adam Sedgewick among others. Jean's engagements in popularizing science are represented by proofs and typescript of lectures and essays, especially those written for the BBC, 1934-1935, together with associated letters and press cuttings. The series contains collections of offprints, reprints, and extracts of published works by Jeans and others, notably from the Philosophical Transactions and the Philosophical Magazine.

The working drawings of John Smeaton, civil engineer. They illustrate his researches on waterwheels and applied mechanics, and the relative efficiency of overshot as opposed to undershot wheels. With supplementary engravings and manuscript notes.

The correspondence of Sir John William Lubbock, providing information on a wide range of Lubbock's contemporaries, not exclusively in the field of science. The largest collections of scientific letters are from George Biddell Airy (113 letters), John George Children (128 letters), Joshua Alwyn Compton, 2nd Marquis of Northampton (98 letters), G P D de Pontecoulant (67 letters) and William Whewell (87 letters). There are smaller but no less important groups of letters from Charles Babbage, Francis Baily, Francis Beaufort, Charles Darwin, John Couch Adams, J F W Herschel, Baden Powell and W H F Talbot.

Transcribed from the original Letter Books. Contain fair copies of letters received by the Royal Society, the originals of which are in the Early Letters. Volumes 1-18 are letters of 1661-1727; within this group, Volume 11 has been extended into two volumes. Volume 17 was created in order to leave a gap in the series for retrospective copying of original papers. The succeeding volumes overlap in time, giving correspondence for the years 1720-1740. There are four supplementary copies, labelled A-B, B-C, D-G, G-H.

Files of papers and correspondence relating to the Royal Society's administration of its internal affairs. Currently, the bulk of this material falls within the period 1925-50, although the period covered varies considerably according to subject. At present, the collection forms an important source on the Society's activities during the Second World War, and includes files of the Central Register (Section for Scientific Reseearch) for 1939-1940. Section A of the series contains correspondence of a number of important Fellows; WH Bragg 1935-41; HH Dale 1926-45; ACG Egerton 1939-49; AV Hill 1949-45; FW Lanchester 1942-44; HG Lyons 1939-42; TR Merton 1941-56; R Robinson 1946-50; AC Seward 1932-41; FE Smith 1928-33; HT Tizard 1940

Single manuscript letters or small groups of related documents considered too small to be added to the Manuscripts General series. Includes various document formats. The collection contains all manner of papers by, about or belonging to the Fellows of the Royal Society. Subject matter covers all branches of the sciences and includes non-scientific material. Current accessions are limited to materials not generated by the Royal Society, but acquired by gift or purchase; these usually number less than 10 items per accession. This has not always been the practice, so that the collection also contains relatively large groups of papers, occasionally on Royal Society business.

Correspondence of Sir Edward Sabine, together with two volumes of correspondence on Terrestrial Magnetism by Sir Edward Sabine, Reverend Humphrey Lloyd and others.

Catalogue of nebulae of Sir John Herschel: A bundle of working sheets with the title 'Sir J F W Herschel's Catalogue of Nebulae'.

Letters and papers of Sir Thomas Edward Thorpe including scientific letters to T E Thorpe from colleagues, with documents relating to the Chemical Warfare Committee of the International Law Association. Containing also Thorpe's own letters to family members, his testimonials for work appointments and obituary notices.

Lists of Visitors introduced at Meetings of the Royal Society in 9 volumes as follows: Volume 1 1783-1788; Volume 2 1812-1820; Volume 3 1822-1832; Volume 4 1847-1855; Volume 5 1856-1866; Volume 6 1867-1877; Volume 7 1878-1888; Volume 8 1889-1898; Volume 9 1899-1906.

Alphabetical Index to the Printed Minutes of the Council of the Royal Society, 1845, in the hand of Dr Roget.

Letters and papers of the Royal Society Sylvester Medal Fund including correspondence regarding the setting-up of a Sylvester Memorial by international committee.

National Physical Laboratory Executive Committee Minutes, 1924-1925.

Letters and papers about the early years of the National Physical Laboratory.

Copies of the outgoing letters written by the Foreign Secretaries of the Royal Society.