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HANDBOOK OF PROTOZOOLOGY 



Eimeria schubergi (Fig.20),Schaudinn observed a division which 

 is a good example of the type commonly called promitosis. 

 In this the endosome becomes elongated and then divided into 

 two masses ; the chromatin granules are assembled in two groups 



Fig. 20 a. Nuclear division o{ schizont of Eimeria schubergi. X1500. (After 

 Schaudinn). 



b. Nuclear division of Chilomonas Paramecium. X1500. (After 

 Doflein). 



c. Nuclear division in sporont of Thelohania legeri. X2100. (After 

 Kudo). 



with spindle fibers. In the nucleus of Chilomonas Paramecium 

 (Fig. 20), the nuclear elongation takes place at right angles to 

 the axis of the body. The endosome breaks up and the chroma- 

 tin granules become collected into larger rounded chromosomes 

 which are then arranged in the equatorial plane. At about this 



