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Letter from A J Green about his system of ventilation
Letter from A J Green about his system of ventilation
Letter from John J Hawkins about his door spring, with a note of the Society's decision and drawing
Letter from John J Hawkins about his door spring, with a note of the Society's decision and drawing
Letter from Robert Brown about Italian tiling
Letter from Robert Brown about Italian tiling
Copy of a letter from the Society to Sir Joseph Banks about judging standards of weights and measures
Copy of a letter from the Society to Sir Joseph Banks about judging standards of weights and measures
Letter from William Whittenstall relating to perpetual motion
Letter from William Whittenstall relating to perpetual motion
Letter in French signed 'un gros suisse' about perpetual motion
Letter in French signed 'un gros suisse' about perpetual motion
Letter from Richard Gwynne about his dredging machine
Letter from Richard Gwynne about his dredging machine
Letter from Richard Gwynne about his dredging machine with a postscript suggesting other improvements
Letter from Richard Gwynne about his dredging machine with a postscript suggesting other improvements
Letter from Thomas Maidman about four wheel carriages
Letter from Thomas Maidman about four wheel carriages
Letter from John Baddely about his steel corn mill
Letter from John Baddely about his steel corn mill
Letter from William Dickins about his method of preventing horses turning about in mills and his improved water mill
Letter from William Dickins about his method of preventing horses turning about in mills and his improved water mill
Letter from Cornelius Varley, drawing of 'Mr Milton's tools for making an enlarged cavity at bottom of borings in stone or rocks'
Letter from Cornelius Varley, drawing of 'Mr Milton's tools for making an enlarged cavity at bottom of borings in stone or rocks'
Letter from Alexander Drimmie about his machine for winding yarn
Letter from Alexander Drimmie about his machine for winding yarn
Letter from J C Nisser about Von Aken's powder for extinguishing fires
Letter from J C Nisser about Von Aken's powder for extinguishing fires
Letter from Christopher Pinchbeck on two models of a machine to escape from fire
Letter from Christopher Pinchbeck on two models of a machine to escape from fire
Letter from James Stewart about carriage wheels
Letter from James Stewart about carriage wheels
Letter from William Jervas Simcock about his harpoon
Letter from William Jervas Simcock about his harpoon
Letter from William Jervas Simcock about his harpoon
Letter from William Jervas Simcock about his harpoon
Letter from John Eadolph Riechter, signed Germania, about a machine for ramming pavements
Letter from John Eadolph Riechter, signed Germania, about a machine for ramming pavements
Letter from J Lujiet about fighting ships
Letter from J Lujiet about fighting ships