Catalogue Entry: ALCH00013
'Anno 1656. Serenissimi Principis Frederici Ducis Holsatiæ et Sleswici &c. communicatione sequens epistola me sibi vendicat, inaudita memorans. Veni et vide'.
Bought at the Sotheby sale by Maggs Brothers for £7 and sold to Keynes on 19 August 1936 for the sale price plus 20%.
Transcript of an anonymous alchemical manuscript, an English version of which appeared in Aurifontina chymica, published by William Cooper in 1680 (see Westfall, 'Newton's Index Chemicus', 176, n. 9).