CHAP, i.] TISSUES AND MECHANISMS OF DIGESTION. 465 



to turn to the manufacture of the biliary constituents within the 

 cells. But since the hepatic cells are also engaged in labours 

 other and more important perhaps than that of secreting bile, it 

 will be convenient to defer what we have to say on this point until 

 we come to speak of the formation of glycogen and of the general 

 metabolic events taking place in the liver. 



