Henry Oldenburg wrote to Leeuwenhoek; sent Philosophical Transactions no. 136

July 28, 1677

This letter, now lost, was Oldenburg's final letter to Leeuwenhoek. He wrote it on Juy 28 O.S., which was August 7 in Delft. We know of it only from Leeuwenhoek's reply in early October, when Oldenburg had already been dead for a month.

According to Leeuwenhoek's reply, this letter asked him examine the skin of Moors. It was delivered by Henig Brand, as a cover letter for Philosophical Transactions no. 136, which Brand delivered to Leeuwenhoek.