392 



THE LIYEK. 



as before said, the branches of the portal vein, and ramify in the outer 

 part of each lobule. When a thin section of the hardened tissue is 

 examined under a high power of the microscope, minute apertures may 

 occasionally be observed between the sides of adjacent liver cells (fig. 

 280). These are the sections of fine intercellular passages which form 



Fis. 280. 



Fig. 281. 



Fig. 280. — Section of Liver (Child) hardened in Chromic Acid. Highly 

 MAGNIFIED (Heiing). 



The liver cells have slinink somewhat from the walls of the capillaries, which are 

 filled with red corpuscles. Half-a-dozen pale cori^uscles are also seen within the 

 vessels. The minute apertures between two cells are the fine bile passages. 



Fig. 281. — Section of Rabbit's Liver with the Intercellular Network op 

 Biliary Capillaries injected. Highly Magnified (Heriug). 



Tko or three layers of cells are repi'esented ; h, h, blood capillaries. 



a close network (fig. 281) between and around the individual cells, 

 much finer and closer than the blood-capillary network, from the 

 Ijranches of which they run apart. These passages, which have been 

 called hiliary capillaries, may be looked upon as the commencements 

 of the biliary ducts, for towards the circumference of the lobule 

 they open into the ducts, and, indeed, may with care be injected from 

 the trunk of the bile duct, at least in the outer parts of the lobule, 

 as first shown by Budge, Andrejewic and MacGillavry. 



To demonstrate the intercellular network throng-hout the whole extent of the 

 lobules, Chrzonszczewsky's method of natural injection must be emi^loj-ed. 

 He introduced a saturated watery solution of pure sulph-indigotate of soda, in 

 repeated doses, into the cii-culation of dogs and sucking-pigs, by the jugular 

 vein : and in. an hour and a half afterwards the animals were liilled and the 

 blood-vessels either washed out with chloride of potassium introduced by the 

 portal vein, or were injected with gelatine and cannine. In specimens preiiarcd in 

 this way the fine network of gaU-ducts throughout each lobule is filled ^^ ith 



