Philosophical Collections number 7 published in London, including Leeuwenhoek's Letter L-119 of 1682年04月04日
Date:
April 1, 1682
This number is dated only by the month, not the day. It included a letter from Leeuwenhoek dated April 4, so it must have been published several weeks after that.
This was the last number of Philosophical Collections. Of the seven numbers, Hooke published a letter from Leeuwenhoek in five of them.
