Wrote letter of 1679-04-27 (AB 44) to Constantijn Huygens

April 27, 1679
Standard reference information
AB/CL number: 
AB/CL volume: 

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.

Leeuwenhoek wrote this letter to Huygens, unpublished in his lifetime, about the number of sperm in the milt of the cod. He calculated 150,000,000,000 sperm and 13,385,000,000 people if the whole earth were as densely populated as Holland.

It was a copy of a part of Letter 43 of April 25, 1679, written to Nehemiah Grew, at the time secretary of the Royal Society.