588 JAUNDICE. [Boon n. 



give a definite answer. In some of the invertebrata the cells in 

 the organ, called a liver, which manufacture glycogen, are dis- 

 tinct from those which secrete bile or other digestive juices; 

 and it might be inferred that in the vertebrate the two actions 

 though taking place, as they certainly do, in the same cell, take 

 place apart and distinct. There are facts which seem to indicate 

 that the two are intimately connected ; but we have as yet no 

 exact knowledge concerning the matter. It has been urged 

 that the portal blood is chiefly concerned with the formation of 

 glycogen, and the blood of the hepatic artery with the secretion 

 of bile , but there is no adequate support of this view. It must 

 be remembered moreover that, in addition to the formation of 

 glycogen and the secretion of bile, other metabolic events, espe- 

 cially affecting proteid or at least nitrogenous constituents of 

 the body, are also taking place ; and to these we must now turn. 



