AMEBOID MOVEMENT 17 



its power of concerted movement, there can be no doubt that 

 enucleate amebas do not move characteristically for a short time 

 after the operation, and that this effect is due to the lack of a 

 nucleus. 



Very likely the action of the nucleus on the locomotory pro- 

 cesses is neither direct nor specific. The metabolic balance must 

 be disturbed by so fundamental an operation as the removal of 

 the nucleus, and all fundamental activities must in consequence 

 be affected. That food organisms (chilomonas and coleps) may 

 be eaten and digested as Stole ('10) states, indicates however that 

 the metabolic balance may after a time be regained in some de- 

 gree, for feeding undoubtedly calls for concerted streaming, and 

 digestion for the formation and transfer of enzymes. Until this 

 point receives further attention therefore, it remains unknown in 

 what way the removal of the nucleus disturbs streaming for some 

 time after the operation; but of the fact that streaming is dis- 

 organized for some time, there can be no doubt. 



