Philosophical Transactions, vol. 31, no. 368 published with two letters by Leeuwenhoek, L-569 and L-570
Date:
September 11, 1721
The date is New Style, which was eleven days ahead of the Old Style date of 31 August 1721 used in London.
The date is New Style, which was eleven days ahead of the Old Style date of 31 August 1721 used in London.
