Anton van Leeuwenhoek Protists - Public domain document scan of engraving

Figure Legend from Dobell, 1932:
Two of Leeuwenhoek's figures illustrating letters 125 and 144 enlarged from the original engravings.
Fig. 2, ABC. - Shell of a Foraminiferan (Polystomella?)
Fig. 3, PQ- - The Ciliate Coleps. (The original measures only 6 mm in length.)

[end citation]. Letter 125 is dated 2 June 1700. Letter 144 is from 9. February 1702.