PERIODIC REORGANIZATION IN PARAMAECIUM 



463 



Shoiving when the reorganization process occurred in Line III and 

 derivatives, Culture IE 



was at the 4104th generation. The ascending phase of the 

 process was completely secured (text fig. 7). Cell Ci (4140th 

 generation) has two macronuclear anlagen; Co (4141st genera- 

 tion), resulting from one division, has one macronuclear anlage; 

 Cs (4142d generation) shows the distribution of the chromatin 

 bodies in the daughter cells. 



The next occurrence of the process in Line VI, represented in 

 text figure 8, gives nearly a complete picture of each stage in 

 the process in a single line. The animal (4180-4181) just divid- 

 ing was typical, while the following cell (4181-4182) shows simply 

 the extrusion of one chromatin body and the remnant of a 



TABLE 3 



Showing when the reorganization process occurred /?; Lines I, II, IV, and V, 



Culture IE 



