PERIODIC REORGANIZATION IN PARAMAECIUM 



461. 



in the following generations the process is still going on from the 

 4084th to 4088th generation (Line Via, text fig. 5, Bz, Bg, B4, 

 B5). Therefore, the process does not progress exactly synchron- 

 ously in sister or cousin cells. This is clear from the diagram, 

 text figure 6. The stages of the process in Line Via represented 

 in text figure 5 show the climax and the ascending phase (Bj, 

 B4, B5). Cell 4087 is about to form the macronuclear anlagen. 

 Their formation took place in cells 4088i and 4O882 (B4, B5) . 



Ha 



Text fig. 6 Diagram showing a case of nonsynchronism of the reorganization 

 process in closely related cells. 



The fact that the sister cgIIb show slightly different stages in 

 the process of course has no significance from the standpoint of 

 the synchronal appearance of the process in sister line8\ that the 

 latter occurs is apparent from tables 1, 2 and 3 (pp. 462-463) 

 which give the occurrence of the process in the lines branches 

 from Line VI. Thus in Via the process was going on in the 

 4084th generation, in VIb in the 4092d generation. An exami- 

 nation of table 1 shows that the process was observed in Line 



