blood corpuscles. 



If the life of the non-nucleated cell is prolonged 

 by the use of glucose, is it further prolonged by the 

 use of urea or ammonium nitrate ? 



The nucleus was removed from 2" amebas, and after 

 washing, ten were placed in glucose, ten in glucose + urea, 

 and nine in glucose + ammonium nitrate. 



Number of amebas living 



Q 



Thus in the non-nucleated cell, the addition of 

 urea to the glucose was not beneficial: on the contrary 

 it was harmful. ITie addition of amnonium nitrate v/as 

 without effect. 



(44) 



