J. LeConte—Glycogenic function of the Lnver. 105 
universal among organisms. But, as we have already shown, 
the true analogue both of starch-formation and starch-solution 
in plants is found in the glycogenic function of the liver. Di- 
building material: of course, therefore, a re-conversion 
into sugar it must be again re-converted into insoluble cellu- 
use as fuel for force-making. Plants do not require it for force 
for they draw their force from the sun. Animals do not require 
it for tissue-building for their tissues are wholly aibuminoid. 
. We have seen that albuminoids, whether food or waste tis- 
Sues, are probably split in tbe liver into glycogen and some 
hitrogenous residuum. The glycogen is changed into sugar and ~ 
