Letter, from Antoni van Leeuwenhoek to Henry Oldenburg, dated at Delft Signed autograph Wishes certain volumes of 'Philosophical Transactions' be forwarded to him and promises to send on his account of living creatures found in rain water Transcribed and translated in 'Alle de brieven van Antoni van Leeuwenhoek', edited, illustrated and annotated by Committee of Dutch Scientists, part 1, p 340 For summary see 'The correspondence of Henry Oldenburg', ed and trans by A Rupert Hall & Marie Boas Hall, vol 12, p 134 22 January 1676