CHARACTERISTICS OF LIVING MATTER 63 



of all notice that it moves (see Fig. II). It 

 does this by pushing out a fragment or pro- 

 jection of its own body and then drawing the 

 remainder up to the promontory which has 

 been put forth. Thus it is able to move itself 



FIG. II. 



from place to place. But beyond this we may 

 observe the granules which generally exist in 

 the protoplasm to be also in movement. We 

 can see that these " stream constantly forwards 

 along the central axis of each process as it 

 forms, and backwards within the clear layer 

 all round, like a fountain playing in a bell- 

 jar."* 



So that the movements take place within the 



* Hartog. 



