REPRODUCTION 13 



new offspring takes its origin only from a relatively small 

 part of the mother-organism. The entity of the mother- 

 organism thus remains unimpaired and distinct from the 

 daughter-organism. It is at this stage that we can speak 

 for the first time of a parental relationship between the 

 generations, seeing that we have the parent originating the 



FIG. 4. VORTICELLA MicRosTOMA. (After Stein.) 

 (From Claus, " Textbook of Zoology.") 



a, division ; b, division completed ; c, conjugation with small attached 

 individual (k) ; N, nucleus ; oe, gullet ; w, cilia. 



offspring from a part of its own body leading to a distinct 

 and independent existence of the same. Yet, as can be 

 seen at a glance, the original connection with mere 

 physiological growth of the body is still a very close 

 one. The parent body, whilst in the process of growing, 

 bulges out its contents at a particular point, and the " bud " 



