3l8 DIGESTION. 



called vaginal first arise, and breaking up in the sheath are 

 subsequently distributed like the others around the lobules 

 and become wtar-lobular. The larger trunks of the portal 

 vein being more separated from the lobules by a thicker 

 sheath of Glisson's capsule, give off vaginal branches 

 alone, which, however, after breaking up in the sheath, 

 are distributed like the others between the lobules, and 

 become inter-lobular veins. 



The small intra-lobvlax veins discharge their contents into 

 veins called SM&-lobular (fig. 88), while these again, by their 



Pig. 87-* 



* Fig. 87. Section of a portion of liver passing longitudinally 

 through a considerable hepatic vein, from the pig (after Kiernan) f. H, 

 hepatic venous trunk, against which the sides of the lobules (I) are 

 applied ; h, h, 7i, sublobular hepatic veins, on which the bases of the 

 lobules rest, and through the coats of which they are seen as polygonal 

 figures ; i, mouth of the intralobular veins, opening into the sublobular 

 veins : i', intralobular veins shown passing up the centre of some divided 

 lobules ; I, Z, cut surface of the liver ; c, c, Avails of the hepatic venous 

 canal, formed by the polygonal bases of the lobules. 



