SECT, 8] 



CARBOHYDRATE METABOLISM 



[027 



Murray^) . Both Mellanby and Schmalhausen have weighed the hver 

 at different ages in the embryonic chick, but the 1 1 th day is not 

 associated with any specially marked change in weight. Nevertheless, 

 that it is the embryonic liver which accounts mainly for the results 

 obtained on the entire embryo appears strikingly from the careful 



Ddys5 



11 13 15 



.Incabd^tion £>j^q 



Fig. 280. 



19 



histochemical work of Potvin & Aron, who in 1927 examined the 

 liver of the chick during each day of development, and could find 

 no traces of glycogen in it until the nth or 12th day. After the 14th 

 day they reported that its increase was very rapid, a finding in 

 exact agreement with the chemical results of Murray and Sakuragi^, 



^ Vladimirov & Danilina's curve rises similarly but somewhat higher throughout. 

 - And of Vladimirov, who finds that between the 14th and 20th day of development 

 the liver glycogen accounts for between 35 and 40 per cent, of the whole. 



