322 



GROWTH OF CHEMICAL CONSTITUENTS 



TABLE 179 



Absolute weights, in milligrams, of the constituents of a single brain of the albino 

 rat at different ages (prepared from Table 178) 



Absolute weights in milligrams 



Proteins (1)J 



Phosphatides (2).. 



Cerebrosides (3) .. 



Sulphatides (4) . . . 



Organic extrac- 

 tives 



Inorganic constit- 

 uents 



Cholesterol unde- 

 termined (5). . . . 



Total sulphur 



Total phosphorus. 



177. OOt 

 80.30 

 30.66 

 16.40 



35.80 



24.80 



2.12 

 5.07 



In absolute weight in milligrams of sulphur 



Protein S (1S)§. 

 Lipoid S (4).... 

 Neutral S (6) . . . 

 Inorganic S (7) 



0.982 

 0.149 

 0.279 

 0.130 



1.199 

 0.246 

 0.363 

 0.132 



1.352 

 0.330 

 0.307 

 0.129 



In absolute weight in milligrams of phosphorus 



Protein P (IP).. 

 Lipoid P (2).... 

 Water sol. P (8) 



0.064 

 0.161 

 0.260 



0.215* 



0.558 



0.826 



0.345 

 3.427 

 1.298 



* Record from average: duplicate analyses. 

 t Record from one analysis. 



t Figures in parentheses in this section refer to Chart III. See original. 

 § Figures in parentheses in this and the following sections refer to Chart IV. 

 See original. 



