482 



C. G. MACARTHUR AND E. A. DOISY 



TABLE 11 

 Whole brain: Constituents in percentage of solids 



FETUS 



3 



MONTHS 



Phosphatids 



Cerebrosides 



Sulphatids 



Cholesterol 



Total lipins 



Total proteins 



Organic extractives 



Inorganic extractives . . . 



Total extractives 



Lipin sulphur 



Protein sulphur 



Neutral sulphur 



Inorganic sulphur 



Total sulphur 



Lipin phosphorus 



Protein phosphorus 



Organic phosphorus 



Inorganic phosphorus. . . 



Total phosphorus 



22.09 



12.90 

 0.00 

 1.95 

 7.24 



26.25 



46.56 



19.04 

 12.31 



42.15 



18.75 

 12.85 



31.35 



0.039 

 0,314 

 0.187 

 0.013 



0.553 



0.538 

 0.306 

 0.322 

 0.678 



1.844 



FETUS 



7 



MONTHS 



13.12 



0.00 



2.85 



10.28 



31.90 



38.46 



19.93 

 9.68 



31.60 



0.057 

 0.294 

 0.183 

 0.022 



0.556 



0.563 

 0.100 

 0.300 

 0.648 



CHILD 

 1 



MONTH 



16.40 

 0.33 

 1.80 



13.37 



33.30 



41.30 



17.29 

 8.15 



29.61 



0.033 

 0.238 

 0.180 

 0.033 



0.184 



0.664 

 0.057 

 0.287 

 0.672 



1.611 



1.680 



CHILD 

 3 



MONTHS 



14.50 

 2.04 

 4.00 



12.76 



21.26 

 3.16 

 3.85 

 7.91 



36.19 



42.93 



13.69 



7.22 



25.44 



0.083 

 0.287 

 0.196 

 0.038 



0.604 



0.649 

 0.068 

 0.385 

 0.559 



1.661 



CHILD 



8 



MONTHS 



25.52 

 5.28 

 7.70 



15.70 



54.20 



35.82 



5.46 

 4.58 



20.91 



0.083 

 0.454 

 0.110 

 0.068 



0.715 



0.853 

 0.083 

 0.220 

 0.413 



1.569 



ADULT 



21 

 YEARS 



23.69 

 8.77 

 6.30 



16.26 



55.01 



33.38 



7.83 

 3.69 



10.04 



0.154 

 0.238 

 0.057 

 0.009 



0.458 



1.140 

 0.070 

 0.057 

 0.282 



1.549 



ADULT 



35 



YEARS 



29.42 

 7.56 

 6.21 



12.24 



55.43 



11.52 



0.127 

 0.160 

 0.086 

 0.034 



0.407 



1.044 

 0.060 

 0.194 

 0.205 



1.503 



ADULT 



67 

 TEARS 



35.21 



4.58 

 4.72 



9.30 



0.121 

 0.285 

 0.065 

 0.014 



0.485 



1.158 

 0.065 

 0.047 

 0.276 



1.546 



