168 MANUAL OF PHYSIOLOGY. 



Tightly packed between the meshes of the lobular capillaries 

 are the gland cells. These are large, soft polyhedral cells, with 

 one, two, or even more nuclei, and no trace of limiting membrane. 

 Owing to the shape of the capillary meshes the cells are placed 

 in rows radiating from the centre of the lobule towards the 

 periphery. 



The capillary meshes are said to pass along the angles and 

 edges of these cell blocks so as not to come into close relation 

 to the smaller channels or bile capillaries about to be described 

 (Fig. 75). The finely granular protoplasm of the liver cells is 

 capable of undergoing some slight change in form while alive. 

 In the protoplasm are commonly situated varieties of granules, 



FIG. 75. 



Section of the Liver of the Newt, in whicli the bile ducts have been in- 

 jected, and can be seen to form a network of fine capillaries around the 

 liver cells, the outlines and nuclei of which can be seen. 



the commonest being bright refracting fat globules, which vary 

 in amount with the different stages of digestion, others, of a yellow 

 color, seem connected with the coloring matter of the bile, and a 

 third variety, less refracting and colorless, is said to be related 

 to the glycogen. 



Between the cells of the lobules there can be demonstrated 

 very fine straight anastomosing canals, which appear to be formed 

 by the juxtaposition of grooves which lie hi the middle of the 

 flat surface of two neighboring cells. Every liver cell is related 



