Wrote Letter L-487 of 1712-06-10 to the members of the Royal Society about little animals on a mussel's shell, the ciliar motion of the gills, and the intestines and ovaries of mussels
Date:
June 10, 1712
The original manuscript on six quarto pages, written and signed by Leeuwenhoek, is preserved at the Royal Society (MS. 2087. L 4. 46).
On the cover, Leeuwenhoek wrote, "for de Secretarij of the Roijall Societij at Gresham Colledge London".