Philosophical Collections number 5 published in London, including Leeuwenhoek's Letter L-116 of 1682-03-03 to Robert Hooke

February 1, 1682

This number of Philosophical Collections is dated February 1682. The previous two numbers had been published on the 10th of December 1681 and January 1682. This number 5 included a letter from Leeuwenhoek dated March 3, 1682, so this number was clearly actually published later than its official date of February, but we do not know by how much.