movements of the nucleated and non-nucleated pieces, 

 olight agitation, however, shov/s that the non-nuclear 

 amebas are scarcely attached to the slide; the slightest 

 distur'iance serves to dislodge the'^. This fact, which 

 must be due to the failure to produce the sticky secretion, 

 is probably partly responsible for the difference in movement 

 between the nuclear and non-nuclear cells. 



The fact that a non-nucleated ameba may, under any 

 conditions exhibit normal movements, justifies us in 

 concluding that the nucleus is not necessary for movement.! 

 In ameba, however, movement is affected in some indirect 

 way by removal of the nucleus. 



(28) 



