PLATE XXVII 
TWO OF LEEUWENHOEK’S FIGURES ILLUSTRATING LETTERS 125 AND 144 
Enlarged from the original engravings. 
Fig. 7, ABC.—Shell of a Foraminiferan (Polystomella ?). 
Fig. 3, PQ.—The Ciliate Coleps. (The original measures only 6 mm. in length.) 
facing p. 263 
