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KYAN, John Howard (1774--1850)
[Prospectus]
Patent for preservation of timber from dry rot, fungus, and decay; also from the barnicle, worm, &c. With copies of official documents, proofs of efficacy, &c. ...
[London]: [1832].
3, [1] p. ; 32.5 cm. (2°)

Folded sheet, final verso blank. Drop-head title. Watermark 'Smith & Towns / Turkey Mill / 1830'. The text refers to Kyan having 'now taken out a Patent (31st March, 1832,) for his Invention'. The two copies in the Soane Museum are in different settings and states, copy 1 with the title reading as above and with the last line of text '... on application at [blank]' lacking the address where copy 2 states '... at The Depôt of Tanks, Grosvenor Basin, Pimlico' and has the title reading 'Barnacle'. Kyan's patent was issued under the title Preserving certain vegetable substances from decay (cited as patent no. 6253, 31 March 1832) and was followed by further patents in September 1832 (no. 6309) and 1836 (no. 7001). 'Kyanization' is the process of preserving wood against decay by treating it with a corrosive sublimate.


Copy Notes Copy 1: Earlier setting.
Copy 2: 32.4 cm. Later setting. This copy and possibly both copies were probably enclosed in a printed letter of advertisement sent to Soane in August 1832 (q.v.).

Binding Folded paper.

Reference Number 6323


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