32 TOILERS IN THE SEA. 



place, if the two phenomena namely, the vital con- 

 tractility of the protoplasm itself, and the circu- 

 lating force by means of which the granules are 

 impelled, acted independently one of the other. 

 Did they act independently, any cessation or alte- 

 ration in the one would not necessarily involve a 

 cessation or alteration in the other, but the circula- 

 tion of the granules would continue unchecked even 

 when the protoplasmic mass had obtained a state of 

 perfect rest. And, notably, when the direction in which 

 the protoplasmic mass had for a time been moving 

 became suddenly reversed, the direction of the 

 granular movement would remain unaltered, at least 

 for a period, were the force producing it an inde- 

 pendent one. But the direction which the granules 

 continue to take under these circumstances becomes 

 immediately reversed also, proving thereby that it 

 simply follows the direction imparted to it by the 

 protoplasm. It only remains to be stated that these 

 phenomena are observable whenever a fresh pseudo- 

 podium is projected ; every modification in the 

 direction taken by the current of granules being 

 distinctly referable to some corresponding change in 

 the form being assumed by the protoplasmic body 

 generally. 1 



1 Dr. G. C. Wallich, "On the Rhizopoda," in Monthly 

 Micro. Journ., vol. i. (1869) p. 233. 



