Letter, from Antoni van Leeuwenhoek to John Chamberlayne, dated at Delft Signed autograph Concerning the taste of boiled water; observations of salt crystals in rain water; observations of the edges of knives Read to the Royal Society on 9 July 1701 3 figures in red chalk attached English translation see EL/L3/32 Transcribed in JBO/10/224 Transcribed and translated in 'Alle de brieven van Antoni van Leeuwenhoek', edited, illustrated and annotated by Committee of Dutch Scientists, vol 13, p 305 English translation printed in 'Philosophical Transactions', vol 22, no 273, p 899 21 June 1701