Robert Hooke read the headings of Letter 33 of 1680-11-12 (AB 65)

November 21, 1680

Birch, History, vol. IV, p. 57, 11 November 1680 (O.S.) in London:

Mr. HOOKE produced a long letter lately received by him from Mr. LEEWENHOECK. It was written in Low Dutch; but the contents of the several heads were read by Mr. HOOKE. It was defired, that the said letter should be translated and answered.