Till: Ml.TU'.ol.ISM OP I'ROTKIN 





The tissues can therefore be only a stopping-place for the amine 

 acids. When tin- latter are determined in blood collected from different 

 parts while absorption of protein from the intestine is in process, it 

 lias been found, as shown in Pig. i vv . thai during the passage of the 

 blood through the liver there is a greater fall in the concentration of 

 amino acids than during its pj through the entire remainder of 



the body. 



It will I"' seen thai the above conclusions are drawn from estima- 

 tions made on blood taken from the vena cava, portal vein, and hepatic 



iwing tli. ten in the iring i.. 



m D. D. Van Sl> k 



artery, the upper enrves in the eliart being from animals during digestion 



and the lower from fasting animals. The results show that the liver must 



be particularly greedy of amino acids, which, however, must rapidly be- 

 come transformed into other sub s, since no icuous varia- 

 tion has been Sound to occur in the amino-acid content of the tissues 



a rding to whether the animal is fasting or is digesting protein fi 



This result, it is to be noted, is quite different from that which is ob- 

 tained after the intravenous injection of amino acids, and I 



