736 PHYSIOLOGY 



animal grows the greater is the protein content of the milk with 

 which it is supplied : 



We should expect then that the milk which is the sole food of 

 the growing infant should contain a relatively greater proportion 

 of protein than is necessary in the case of the adult. In an experiment 

 by E. Feer, quoted by Bunge, a child weighing 8226 grm. at the 

 thirtieth week took 951 grm. of milk. Human milk contains : 



Protein 1 '6 per cent. 



Fat 3-4 



Sugar 61 



Ash 0-2 



The child, was therefore receiving daily : 



Protein 15'2 grm. 



Fat 32-3 



Sugar 58-0 



Ash . ... 1-9 



According to the same proportions a man of 70 kilos would take in : 



Protein 129 grm. 



. ' . . . 275 

 . 494 

 16 



Sugar 



Ash . 



It is interesting to note that the protein of this diet differs but 

 little from that in the diets ordinarily accepted as standard. 



