Wrote Letter L-361 of 1699-09-25 to the members of the Royal Society about the circulation of blood in tadpole capillaries, the transition from arteries to veins, blood clotting, the dissolution of clotted blood, and the origin of the name thunder-pad
Date:
September 25, 1699
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 about the circulation of the blood in the capillaries of a tadpole and the transition from arteries to veins. About the motions of the blood in the case of local clotting in a blood-vessel and the dissolution of the clotted blood. About the origin of the name thunder-pad.