THE MULTIPLICATION OF ANIMALS AND SEX 53 
spontaneous generation of organisms, and that all the ani- 
mals whose life history we know are produced from other 
animals of the same kind. “ Omne vivum ea vivo,” All life 
from life. 
Fig. 26.—The multiplication of Amada by simple fission. 
30. The simplest method of multiplication In our study 
of the simplest and the slightly complex animals we became 
acquainted with the simplest methods of multiplication 
and with methods which are more complex. The method 
5 
