John Coakley Lettsom's house, Grove Hill, Camberwell, Surrey: view from the road. Engraving by Ambrose Warren after G. Samuel, 1805.

The tonometer: explaining and demonstrating, by an easie method, in numbers and proportion, all the 32 distinct and different notes, adjuncts or suppliments contained in each of four octaves inclusive, of the gamut, ... By Ambrose Warren, ..

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