The Royal Society read Leeuwenhoek's letter of March 23, 1677

March 29, 1677

At their regular meeting, the Royal Society read Leeuwenhoek's letter of March 23. Nehemiah Grew was assigned to replicate Leeuwenhoek's results from the October 9 letter. Note: Because England had not yet adopted the Gregorian calendar, this letter was read 16 days after it was sent from Delft, not 6 days. According to Birch's History, vol. 3, p. 338:

A letter of Mr. LEEWENHOECK to Mr. OLDENBURG, dated at Delft, 23d March 1677 was read, giving some account of his observing live animals in water.

It was ordered, that Dr. GREW should be desired to try what he could observe in the like waters; and that for this purpose an extract should be given him by Mr. OLDENBURG of Mr. LEEWENHOECK'S observations formerly read to the Society.