126 MO^HOLOGY AND CULTURE OF MICROORGANISMS 



from a larger parent; sometimes many buds are formed rapidly, one 

 after the other, until the parent protozoon disappears in a swarm of 

 daughter cells. When a protozoon divides at a single division to pro- 

 duce a large number of daughter cells simultaneously, the process is 



Fig. 93. — Coccidium schubergi. A-C, asexual multii)iicatioii; D~K, sexual multi- 

 plication; D, njicrogametes; E, macrogamete; P, G, fertilization; B, I, K, division 

 and spore production. {After Schaudinn, from Doflein.) 



called schizogony and the young parasites are called merozoiies, i.e., if a 

 sexual fertilization has not immediately preceded the act of division; 

 if such a division, in which the parent organism disappears, takes place 

 after a fertilizing act, the process is called sporogony and the young 

 parasites are sporozoites. 



