Essay de Dioptrique
Publisher:
Paris: J. Anisson
Year:
1694
full text facsimile available to download from Google Books.
First published in French. It was published in Dutch translation by A. Blok as Proeve der Deurzicht-kunde in 1699. Leeuwenhoek had a copy in December 1698 when he wrote to Harmen van Zoelen about Hartsoeker's claim to have been the first to discover sperm. The Dutch translation had a cover illustration by Jan Luykens.