258 



DIGESTION. 



The illustrations below will show the conflicting theories at 

 a glance. 



FIG. 90. 



Diagrams showing the arrangement of the radicles of the hepatic duct, according 

 to different observers. 



1. 2, 2, are two branches of the hepatic duct, which is supposed to commence in a 

 plexus situated towards the circumference of the lobule marked 4, 4, called by Kier- 

 nan the biliary plexus. Within this is seen the central part of the lobule, contain- 

 ing- branches of the intralobular vein, 1, 1. 



2. A small fragment of an hepatic lobule, of which the smallest intercellular bili- 

 ary ducts were filled with coloring matter during life, highly magnified (from 

 Chrzonszczewsky). 



3. View of some of the smallest biliary ducts illustrating Beale's view of their 

 relation to the biliary cells (from Kolliker after Beale), 1 |A. 



The drawing is taken from an injected preparation of the pig's liver ; a, small 

 branch of an interlobular hepatic duct ; c, smallest biliary ducts ; b, portions of the 

 cellular part of the lobule in which the cells are seen within tubes which commu- 

 nicate with the finest ducts. 



