348 
The Discovei'jj of the Coeeidia 
is probably that of Hake (1839), though he also was unable to interpret his 
findings correctly; while the first published description and figure of the 
lesions of hepatic coccidiosis in the rabbit are probably to be found in the 
work of Carswell (1838), who likewise misinterpreted what he saw. 
Leeuwenhoek’s observations seem to me so remarkable, and to possess 
such interest for all students of the history of Protozoology, that I have felt 
it my duty—and a very pleasant one—to rescue them from the oblivion in 
which they have already lain all too long: and their publication, even at this 
belated hour, will serve, I hope, still further to enhance the reputation of 
one who is rightly regarded as the Father of Protozoology. 
REFERENCES 
Bidloo, G. (1698). Observatio, de animalculis, in ovino aliorumque animantium hepate de- 
tectis, ad virum celebrem Antonium van Leeuwenhoek. 4°, Lugd. Batav. 
Butschli, O. (1882). Protozoa (Abt. Sporozoa), in Bronn’s Klassen und Ordnungen des 
Thier-Reichs, vol. i. 8°, Leipzig u. Heidelberg. 
Carswell, R. (1838). Pathological Anatomy. Illustrations of the Elementary Forms of 
Disease. Fol., London. 
Davaine, C. (1860). Traite des Entozoaires. 8°, Paris. 
Diesing, C. M. (1851). Systema Helminthum, vol. n. 8°, Vindobonae. 
Dobell, C. (1919). A revision of the Coeeidia parasitic in Man. Parasitology, xi, 147. 
- (1920). The discovery of the intestinal protozoa of man. Proc. Roy. Soc. Med., xni 
(Hist, of Med. Sect.), 1. 
Hake, T. G. (1839). A Treatise on Varicose Capillaries, as constituting the structure of car¬ 
cinoma of the hepatic ducts, and developing the law and treatment of morbid growths. 
With an account of a new form of the pus globule. 4°, London. 
Hooke, R. (1665). Micrographia: or some Physiological Descriptions of Minute Bodies made 
by Magnifying Glasses. Fol., London. 
Labbe, A. (1896). Recherches zoologiques, cytologiques et biologiques sur les Coccidies. 
Arch. Zool. Exp., iv (3 ser.), 517. 
Leeuwenhoek, A. van. See, in addition to the works to which particular reference is made 
in the text, Opera Omnia [Latin works], 4 vols., sm. 4°, Lugd. Bat., 1722: Werken 
[Dutch works], 4 vols., sm. 4°, Leyden en Delft, 1686-1718. 
Leuckart, R. (1879). Die Parasiten des Menschen, 2 Aufh, I Bd. 8°, Leipzig u. Heidelberg. 
Redi, F. (1668). Esperienze intorno alia Generazione degV Insetti. 4°, Firenze. 
-(1684). Osservazioni intorno agli Animali viventi che si trovano negli Animali viventi. 
4°, Firenze. 
