EFFECTS OF CONJUGATION 



73 



tion but a process of protoplasmic reorganization, followed 

 by renewal or re-birth of all vital activities including that of 

 reproduction. 



FIRST MATURATION DIVISION OF MICRONUCLEUS 



SECOND AND THIRD 

 DIVISION OF MICRONUCLEUS 



THREE SOMATIC DIVISIONS OF FERTILIZED NUCLEU3 



FERTILIZATION 



TWO CONSECUTIVE DIVISIONS 

 GIVING FOUR NORMAL CELLS 



FIG. 30. Diagram of the consecutive stages in conjugation of Paramecium 



caudatum. 



Investigations subsequent to those of Butschli have revealed 



all the happenings during the process of conjugation in Para- 



'mecium. The micronuclei in each cell first begin to swell by 



the absorption of fluids from the endoplasm; the chromatin 



