75 



quantities of v/oody rarticioi: in these larr^er, uliin-walled 

 lobules su/^f^ests that this po^^tion oT the liver may be 

 speciuliiied for the dit^^estion oi' cellulose, and this view 

 is strengthened by the long retention of v/oody materials 

 in the caecuiii. This portion of the livor is adjacent to 

 the opening of the caecum, and it may be that it secretes 

 a ferment for cellulos digestion which is oontinuod in the 

 caecum. As has been pointed out already, the latter by 

 its structure seems adapted to absorption on a large 

 scale. 



