Records of the Department of Chemistry of Imperial College, 1880-1991, including articles, press cuttings, reminiscences of old students, 1912-1991; regulations, 1901-1925; examination papers, 1886-1972; correspondence concerning equipment and test certificates, 1905-1933; notebooks of students' laboratory work, 1890-1903; notes on advanced organic chemistry lectures, 1914-1915; practical chemistry, 1894-1896; physical chemistry lectures, 1905; inorganic chemistry, 1894-1895; correspondence of staff, including Professor Sir William Augustus Tilden, 1907-1909; Professor James Charles Philip, 1909-1934; Professor Sir Thomas Edward Thorpe, 1909-1921; Professor H B Baker, 1912-1932; Martha Annie Whiteley, 1918-1934; Professor Friedrich Adolf Paneth, 1933-1939; correspondence relating to departmental reorganisation, 1939, and reconstruction of advanced analytical laboratory, 1938-1939; papers relating to laboratory work, 1925-1963, including sample analysis, 1925-1963; Rectors' papers relating to the department, 1950-1981, including correspondence relating to a Rockefeller grant, 1950-1957; appointments and future of the department, 1975-1981; staff attendance book, 1909; correspondence relating to war emergencies, 1938-1961; papers, including minutes, relating to the National Joint Committee on recruitment and training of science laboratory technicians, 1951-1957; papers of the Organic Chemistry Laboratory, 1907-1921; examination lists and results, 1907-1924; annual dinner menu, 1931, and list of members, 1947, of the 31 Club; analytical laboratory students records, 1910-1925; inventories of platinum apparatus and platinum, 1920-[1967]; second and third year student records and reports, 1939, 1940 (KC);
papers relating to Agricultural Chemistry, 1880-1955, including notes on Henry Tanner's lectures, 1880; correspondence concerning the course, 1935-1955 (KCA);
papers relating to the Chemical Engineering Department, 1910-1985, including press cuttings and departmental history from 1912-1939, [1960]; departmental annual and research reports, 1926-1991; postgraduate courses, 1910-1991; Professors' records, 1945-1956; students' records, 1919-1945; lists of students, 1936-1944, 1947-1950; research assistants, 1939-1941; correspondence of staff notably Professor William Arthur Bone, 1911-1936; Professor John William Hinchley, 1919-1932; Professor Sir Alfred Egerton, 1936-1946; correspondence relating to the establishment and organisation of the department, 1911-1942; papers relating to the department building, 1911-1935, including correspondence with the architect, 1911-1914; specifications and agreements, 1913-1930; estimates and expenditure for equipment, 1911-1950; correspondence relating to the Courtauld Trust endowment for a Chair of Chemical Engineering, 1944-1959; with Radiation House relating to a fellowship, 1938-1961; Rectors' correspondence with Heads of the Department, 1957-1981; British Iron and Steel Research Association research plans and press cuttings, 1947-1966; papers relating to Health Physics (Radiation Protection) summer schools, 1960-1980 (KCT).

Scientific and other papers sent to the Royal Society, presented at meetings of Fellows, or commissioned by the Society. They form a complementary series to the Early Letters, both of which were superseded by the Letters and Papers. Many of these items, referred to as the 'Guard Books', are duplicated in the Register Book of the Society. The classification is a simplified form of the 'Philosophical Transactions' abridgment by John Lowthorp. This arrangement was completed in 1741 by Thomas Birch. The majority of the papers in these volumes are manuscript, but a few printed documents occur throughout the series. Some of the papers are earlier in date than the grant on 15 July 1662 of the First Charter to the Society. The Committee of Trades seems to have been associated with the earlier meetings of those philosophers who subsequently became Fellows, and produced a number of practical papers, some of which were written in 1639 and which are mostly found in Volume 3(i). There are still earlier documents, mostly in Volume 25, which may have been included in the gift, in 1667, of the Arundel Library.

Papers of Brian S Dyde relating to the Hydrographic Office of the Admiralty and to the hydrographic survey work of the Royal Navy, including surveyor's workbooks, 1959-1973, including astronomical observations for the position of a geodetic station on the Island of Arorae, Jun 1962; and papers relating to the history of the Hydrographic Department.

International Hydrographic Bureau 'Report of the Proceedings of the 5th International HydrographicConference, Monaco, 22 April-5 May, 1947'.

Chronometer records of the Hydrographic Department, consisting of sixty-three volumes of registers, digest books, indexes, trial records and correspondence, 1821 to 1950. Issues and receipts of chronometers are registered in twenty-eight volumes, 1821 to 1936, and on a series of record cards, 1936 to 1950. Digests of chronometer repairs comprise nine volumes, 1836 to 1933; indexes to these registers and digests are contained in twelve volumes, 1820 to 1939. Other subjects include records of observations of standard mean solar clocks, 1951 to 1961 (2 vols). Single volumes include a list of contracts, c 1917 to 1918; a list of chronometers, c 1920; a departmental address book, c 1913 to 1922; a record of instruments which were not government property (including loans), 1940 to 1947; valuations and reports on second-hand instruments, 1943 to 1944. Single volumes of internal reference and communication sheets (with some external correspondence) relate to returned instruments, 1938; to those removed from departmental books, 1930 to 1939; to chronometers issued on loan, 1930 to 1937; to sales of instruments, 1932 to 1936; to those returned from service, 1937 to 1938; and to chronometers formerly belonging to Royal yachts, 1930 to 1935.

'Geological researches round London', comprising five volumes of manuscript copies, by a number of hands, of notes made by James Mitchell principally on the geology and botany of London and the Thames Valley during his residence in the City, [1832-1840]. Also includes some cuttings of Mitchell's published articles. An index to the papers appears at the front of each volume and the titles or subjects listed are:

VOLUME 1

Loampit Hill; Cavern on the side of Blackheath; Pit in the old Charlton Parish; Shooters Hill; Pit at New Charlton near Woolwich; Sundridge Park near Bromley; Erith; Crayford; Bexley Heath; Dartford; Road from London to Gravesend; Greenhithe Park; Northfleet (including fossils and plants); Shorne; Holly Hill; Gadshill; Pits at Chatham; Gravesend to Wrotham; Town Malling; Quarry near Maidstone; Kits Cotty; Isle of Sheppey; Cliff at Reculver; Margate Sands; Chatham to Canterbury; Key Street; Sittingbourne; Canterbury to Margate; Isle of Thanet; Sandwich; Richborough Castle; Channel Flints; Dover to Folkstone; Hayes Common; Pratts Bottom; Knockholt Beeches; Knockholt to Tunbridge; Tunbridge to Maidstone; London Clay in Kent; Sand found in the Thames; Brickmaking; Useful applications of Chalk; Limeburning; Great Lime; Lias Lime; Cement Stone; Heights in Kent; Manufacturing of Whitening.

VOLUME 2

Heights of various places in Middlesex, Surrey and Sussex above the low water according to the Trigonometrical Survey; London Clay; Remains of quadrupeds; Of gravel; Animal remains in flint found in the Clay; Kensington; Hampstead; Highgate; Tottenham Marshes; From London to Edgeware; Stanmore Common; Harrow on the Hill; London to Uxbridge; Amersham; Watford; Hatfield Herfordshire; Well at Beaumont Green; Ware; Hertford; Ware to Cambridge; London to Romford and Brentford; Brook Street; Warley Common; London to Chigwell and Ongar; Ongar; London to Cambridge by Epping; Saffron Walden; Alluvial soil on the banks of the Thames; Purfleet; Artesian Well in the Marsh near Purfleet; Button's Breach; Gray's Thurrock commonly called Grays; London to Woodbridge; Chiselhurst; Gravesend; Dartford Marshes; Orpington; Wandsworth; Knightshill; Kingston upon Thames; Croydon; Head of the Wandle; Carshalton; Beddington Surrey; Mitcham Common; Wells at Mitcham; Ashtead Surrey; Ewell Surrey; Carshalton Downs; Croydon to Merstham; London to Merstham; Merstham; Well below the Church at Merstham; Gatton Park; London to Reigate by Sutton; Reigate; London to Godstone; Godstone; The Bourne; Tilburstow; Bletchingly; Fuller's Earth Pits; London to Dorking; Dorking to Limepits; Dorking to Leith Hill; Leatherhead to Guildford; Guildford; Chelsworth House; Langdon Hills Essex.

VOLUME 3

New River Company's well at the end of Tottenham Court Road; Upper Clapton; List of minerals and fossils in the pits at Muswell Hill by Frederick Purdey; Brentford; Hounslow Heath; Hanwell; Wells at Hanwell; Harefield; Enfield; Northan; Cheshunt Street; Watford; Wades Mill; Puckeridge; Much Haddam; Royston; Tring; Strata of Essex; Waltham Abbey; Sewardstone; Epping Forest; Stratford; Dagenham; Ilford; Romford; Upminster; Peckham Rye; Counter Hill; Norwood; Epsom; Sutton; Cheam; Road from Croydon to Limpsfield; Merstham; Bletchingly; Nutfield and Fuller's Earth Pits; Barnes; Chertsey; Plumstead; Sydenham; Dartford Heath; Chiselhurst; Westerham; Farningham; Maidstone; Wrotham; Upnor; Cliff, Cooling and All Hallows; Cuxton; Halling; Isle of Sheppey; Sittingbourne; Windsor; North side of Bagshot Heath; Bagshot Heath; On the Blackheath formation; Druid Sandstone; On the changes produced on chalk flints.

VOLUME 4

Section of the London and Croydon Railway; Of the London Basin; Of the London Clay; Age of the London Clay; Fossil wood in London Clay; Septaria or Cement Stone; Wells in London; Bognor Shells; Woolwich Shells; Mineralogical substances in Middlesex and Essex (Cement Stone, Pyrites, Selenite, Wood, Sulphate of Magnesium); Quartz; Gravel. Series of papers on the construction and description of water wells, including: Foul air - wells; Wells at Sanderstead, Norbury, Epsom Downs, Kent; Air pump used in well digging and well boring; Expense of well digging and well boring; Direction of underground currents; Foul air in Wells in Essex and Middlesex; Beds of sand in the blue clay beneath it; Wells rot each other; Wells at Sheerness and in Sheppey; As to whether digging or boring be preferable; Muswell Hill; Barnet; Hemel Hempstead; Tring; Buntingford; Royston; Hare Street; Danbury; Rochford and Rayleigh; Wallisea Island; Wigborough; Coast near Malden; Braintree; Croydon and the neighbouring Country; Brixton; Forest Hill; Well at Balham Hill; Well at Mortlake; St George's Hill; Kingston to Guildford; Weybridge; Well at Cobham; Godstone; Well at Merstham; Waltham on the Hill; Headley; Reigate; Red Hill Reigate; Dorking; Wells at Normanry and Ash; Wells in the Weald of Sussex; Reading; Newbury; Bexley Heath; Chelsfield and Well Hill; Wells at Margate; Great Baddon; Wells in various places.

VOLUME 5

Superficial strata of the county of Middlesex; Wells in Middlesex; Well at St Mary Woolnoth; Church Fenchurch Street; The Thames Tunnel; Mud and sand carried out by the Thames; Hampstead Heath; Watery action on the surface in Essex; On wells formed by digging and boring in Essex; Stratford in Essex; Chigwell and Chigwell Row; Kelvedon; Copford; Great Wakering; Wakering Marsh; Foulness Island; Walton on the Naze; On the watery action on the surface of the county of Surrey; On the sections at New Cross; on the strata of the of the Jolly Sailor Station of the Croydon Railway; Shirley sand pits; Addington Hills; Croham Hurst; Croydon; Woking Common; Leatherhead; Nettley Heath; Heights above the level of the Thames of places in and about London; On the foul air in the chalk and in the strata above the chalk in the country near London.