'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.

Scrapbook of cuttings collected and notes made by Dr John Percy between 1864 and 1888, including transciptions of a series of twelve lectures given at the Royal School of Mines in December 1863 and January 1864, as published in 'Chemical News' between January and August 1864. The lectures, entitled 'Chemical Geology', are annotated and cover subjects such as silicon, alumina, sulphur and diamond.

These cuttings from 'Chemical News' are interspersed with those from several other publications, primarily the 'Engineering and Mining Journal', 'Mining Journal', and 'The Times' newspaper, as well as handwritten notes by Percy. Content mostly involves diamonds, diamond mining, and other mining activities.

The records listed below are of the London office of the Central Provinces Manganese Ore Company. They include:

Ms. 15907-21: Foundation and constitution: initial activities, agreements, memoranda and articles of association, share capital, shareholders, allied companies etc;
Ms. 15922-7: Management: AGMs, powers of attorney, proprietors and board minutes;
Ms. 15928-40: Finance: accounts, ledgers, journals, cash books, assets, taxation;
Ms. 15941-71: Administration: office diaries, correspondence;
Ms. 15972-8: Prospecting licences;
Ms. 15979-97: Mining leases;
Ms. 15998-16040: Mines inspections, reports, plant and machinery etc;
Ms. 16041-54: Ore analysis, mining methods etc;
Ms. 16055-83: Marketing: sales, contracts, prices, freight, shipments, duties;
Ms. 16084-95: Photographs, maps, plans, drawings of mines and activities;
Ms. 16096-116: Personnel: records of directors, managers, engineers, mineworkers etc., salaries, contract labour, staff provident fund;
Ms. 16117-20: Property: India (except mines) and England;
Ms. 16121-31: Miscellaneous papers: the company, the industry, Indian affairs;
Ms. 16132-43: Manganese Ore (India) Limited: foundation, agreements, minutes, reports etc.

All the records are held off-site and therefore require 24 hours notice for access.