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Letter from William Gee about sending his verdigris to John Collinson for testing
Letter from William Gee about sending his verdigris to John Collinson for testing
Letter from Charles S Compton addressed to John Hall, with certificates about his steam driven locks and other fragments with further reports
Letter from Charles S Compton addressed to John Hall, with certificates about his steam driven locks and other fragments with further reports
Letter from William Nichol about instrument for taking angles
Letter from William Nichol about instrument for taking angles
Letter from Sir John Hall on steam driven locks
Letter from Sir John Hall on steam driven locks
Letter from John Hughes about his coloured lanterns, with drawing and envelope
Letter from John Hughes about his coloured lanterns, with drawing and envelope
Letter from George Edwards about his steam gauge, with drawing
Letter from George Edwards about his steam gauge, with drawing
Letter from George Edwards about his steam gauge
Letter from George Edwards about his steam gauge
Letter from Bryan Donkin about George Edwards' steam gauge
Letter from Bryan Donkin about George Edwards' steam gauge
Letter from John Robison about his caster containing oil, with drawing
Letter from John Robison about his caster containing oil, with drawing
Letter from William Kennisk about artificial horizon and about preventing explosions in ships magazines (4 pages in total)
Letter from William Kennisk about artificial horizon and about preventing explosions in ships magazines (4 pages in total)
Letter from Graham Chappell about his method of milling or indented wood, ivory or metal
Letter from Graham Chappell about his method of milling or indented wood, ivory or metal
Letter from Rev J J Tucker about his aid to swimming, with drawing
Letter from Rev J J Tucker about his aid to swimming, with drawing
Letter from Edwin Ward Trent about his improved doubling and twisting machine
Letter from Edwin Ward Trent about his improved doubling and twisting machine
Letter from Jacob Lawrence about lifeboat and leather sails
Letter from Jacob Lawrence about lifeboat and leather sails
Letter from Sergeant William Wisely, 1st Dragoons, about his new pattern military saddle, with a letter addressed to Isaac Armstrong
Letter from Sergeant William Wisely, 1st Dragoons, about his new pattern military saddle, with a letter addressed to Isaac Armstrong
Letter from Lt. J Beauchant about guns on ships of war, with envelope
Letter from Lt. J Beauchant about guns on ships of war, with envelope
Letter from R Clayton about his aerostatic machine, with drawings
Letter from R Clayton about his aerostatic machine, with drawings
Letter from J Milikin about surgical instruments, with envelope
Letter from J Milikin about surgical instruments, with envelope
Letter from Matthias Saul about his sliding sashes for windows, with drawing
Letter from Matthias Saul about his sliding sashes for windows, with drawing
Letter from Johannes Poske in German, description about preventing a ship from sinking, with drawing
Letter from Johannes Poske in German, description about preventing a ship from sinking, with drawing