Machine for sampling sea-water at depth Size:XS: 40 x 30cm Scene in the Hanover Square

Scene in the Hanover Square Rooms

An English extract of the letter was printed in Philosophical Transactions of the Royal Society

volume 1 (London

dark coat and white neck-cloth

Nobby Stiles refereeing a charity match at Oswestry

Machine for sampling sea-water at depth Size:XS: 40 x 30cm Scene in the Hanover SquarePlate 11 from the paper 'On the specific gravity, and the temperature of sea waters, in different parts of the ocean, and in particular seas; with some account of their saline content', by Alexander Marcet, Philosophical Transactions of the Royal Society, vol. 109 (1819), pp. 161 208. The instrument has twintrapdoors within a weighted brass cylinder. Original: pencil on paper. 1819