is unable to corr.blnf, carbon and nitrogen: the power of' syn- 



ii 



thesis is absent. 



There is further evidence of the loss of the newer of 

 synthesis in the failure to produce tht sticky secretion by 

 means of vvhich Ameba attaches itself to various objects. 

 Normal amebas are fir'ly attached to the slide, and frequent- 

 ly stick to the sides of a pipette when drawn up into it. 

 Non-nucleated amebas, however, sh'-irtly after the repoval 

 of the nucl&us, are but lightly if at all attached to the 

 slide, and never stick to the sides of a pipette. 



In conclusion, the enucleated cell rnay move, respire, 

 di^^est, respond to stimuli, and exhibit any activity which 

 is dependent solely upon catabolic or destructive processes 

 of protoplasm. The one group of phenomena which it never 

 shov.'S, ai-r. the phenomen'i of growth, and the related phenom- 

 ena of regeneration and division. The phenomena of growth 

 are essentially phenomena of organic synthesis, and the de- 

 pendence of grov/th upon the nucleus involves the dependence 

 of organic synthesis upon the nucleus. 



The configuration of atoms: G-N-C, so characteristic 



of the nucleic acid moleciiie, is also the configuration 



v/hich occui-3 in the protein molecule at the points v/here 



the amino-acids are joined. This fact may be not wit'nout 

 significance. 



(66) 



