22O 



THE BEGINNINGS OF LIFE. 



On the ninth day the pellicle began to assume a 

 brownish colour on the surface, owing to the enormous 



FIG. 58. 

 Phases in the Life-history of Monads and Amoebae. ( x 1670.) 



a, a. Monads in different stages of growth. 



b, b. Similar Monads which have lost or retracted their flagella. 



c, c. Monads about to be transformed into Amoebae. 



d, d. Resulting Amoebae in active and motionless stages. 

 *> / g> b. Stages by which motionless Amoebae become encysted. 

 i, k, Z, m. Stages by which other Amoebae become resolved into Bacteria. 



development of minute, brown fungus-germs J . Portions 

 of the pellicle were also separating and beginning to 

 sink, whilst many of the spherical Amoebae were under- 

 going changes destined to result in encystment. 

 1 Very similar to those represented in Fig. 59, e. 



