Differences in Protein Compounds 181 



any amount which the food seems likely to supply. 

 Notwithstanding this indirect evidence, it cannot be 

 safely affirmed that one albuminoid does not pos- 

 sess much greater value for a specific purpose than 

 another, and here is a field in which the investigator 

 may render valuable service. 



NOTE. Extensive experiments recently conducted with milch 

 cows by Jordan, Hart and Patten, showed that in every instance 

 the nucleo-proteids in the rations were equal in quantity to those 

 in the milk and excreta. The experiments gave no evidence of a 

 synthesis of these bodies. 



