Wrote Letter L-111 of 1680-11-12 to Robert Hooke about blood globules, lees of wine, globules in rain water, milk vessels, reproduction, little animals in the male seed of animals, and their incomprehensible smallness

November 12, 1680
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Text of the letter in the original Dutch and in English translation from Alle de Brieven / The Collected Letters at the DBNL - De Digitale Bibliotheek voor de Nederlandse Letteren.

The original manuscript on seventeen quarto pages, written and signed by Leeuwenhoek, is preserved along with both figures at the Royal Society (MS. 1881. L 1. 62). It had eight small drawings in red chalk and ink pasted onto two folio pages. An English translation is found at Early Letters L1.63.

Robert Hooke published an excerpt from this letter in Philosophical Collections, no. 3, dated 10 December 1681. See Publications history below.