470 



LORANDE LOSS WOODRUFF AND RH. ERDMANN 



cells from Line III were not preserved but judging by the division 

 rate of the line and the occurrence of the process at this period 

 in Line VI, it is almost positive that the process took place in 

 Line III at this time. Cell 4148 was preserved and found to 

 be a typical cell without traces of the process. Text figure 12 

 (Hi to Ha) give examples of the ascending phase of the process 

 from Line III. The cells 4063 1 and 40632 had formed the macro- 

 nuclear anlagen. Two divisions later, cell 4065 (H3) had only 

 seven chromatin bodies, showing a reduction of these bodies by 



H, 



H2 



H3 



III 4063i 



III 4063o 

 Text figure 12 



III 4065 



distribution and absorption from twenty-seven (H2) to seven dur- 

 ing these two cell generations. Text figure 13 (Ii to Is) give some 

 of the later stages of the ascending phase. The three animals 

 which could be observed had a few chromatin bodies. Cell 4240 1 

 had two, 424O2 one, 42403 one chromatin body. Cell 42404, 

 which continued the line, gave rise to typical animals at the 

 following division, 4241st generation (Ib). 



Text figure 14 (Ji to J3) shows the process after the formation 

 of the macronuclear anlagen in cell 4189. After two divisions 

 the new macronucleus is seen in the sister cells 4191 1 and 41912. 



