Henry Oldenburg wrote to Leeuwenhoek; sent Philosophical Transactions no. 127
Date:
October 8, 1676
Oldenburg wrote this letter on October 8 in London, when it was October 18 in Delft. It wasn't until the following day that Oldenburg received Letter 18 of 1676-10-09.
This letter is known only by Leeuwenhoek's reference to it in his reply of 1676-10-30 (AB 27). Leeuwenhoek thanked him for Philosophical Transactions no. 127, which had an excerpt from his letter of 1676-04-21 (AB 22).
