272 Chemical Differentiation of the Brain 



TABLE III. 



Relative proportions of the proximate constituents of the brain of the fetal pig 

 at different ages compared with the brain of the albino rat at birth. (Aver- 

 ages of the foregoing determinations.} 



In relative proportions of solids. 



Distribution of sulphur in per cent of total S. 



Distribution of phosphorus in per cent of total. 



Cerebrosides not determined in fetal brains. Not present according to Mendel, 

 t Mendel, L: Amer. Journ. of Physiol., xxi, p. 103, 1908. 

 J By difference. 



