STRUCTURE OF THE URINARY TUBULES. 



91 



tissue, which is especially abundant around those capsules 

 which lie next the medulla. 



The glomerulus of vessels contained within the capsule also 



Fig. 142. 



Fig. 143. 



Fig. 144. 



Fig. 142. Capsule of a glomerulus from the kidney of a Rabbit, after 

 being subjected to the action of nitrate of silver and carmine. The 

 endothelial cells of the wall of the capsule (a) in part contain oval 

 nuclei (a'). The endothelium is continued into the neck (/i). The 

 vas afferens (v) presents at v' silvered lines, which indicate the circular 

 muscles, and at v the markings of the endothelium. e, The vas efferens. 

 The silvered lines show that its epithelial cells are fusiform. 



Fig. 143. Tunica propria of a tortuous canal. The interior con- 

 tains detached masses of epithelium. 



Fig. 144. An isolated fragment of a tortuous canal still containing 

 epithelium. Moistened with very dilute hydrochloric acid. 



