VIII 



THE EXCKETION OF UEINE 



451 



plexus can be seen not only along the arterial vessels, but also 

 along the uriniferous tubules, and in Bowman's capsules. By 

 using Golgi's method for staining black with chromate of silver 

 he was able to follow the nerves of the renal plexus from their 

 entry into the hilum with the arteries to their peripheral destina- 

 tion. He saw that the nerves which accompany the vessels form 



FIG. 122. Nerves, ganglion-cells, and nerve-endings in kidney of mouse. (After Berkley.) 1. 

 Artery of medium size near hilum of kidney, with its nerve plexus ; A A, terminal fibres ; B, 

 diverging fibres ; E, nerve-ending. 2. Nerve fibres with nerve endings, surrounding a Bow- 

 man's capsule. Glomerulus visible inside capsule. 3. Cross-section of collecting tube and 

 longitudinal section of convoluted tubule, showing relation of nerve fibres and membrana 

 propria. Small blood-vessel lying near the collecting tubule. 4. Portion of convoluted tubule 

 in which the distribution of medium-sized nerve fibres arising from a ganglion can be followed. 

 5. Elongated ganglion cells on convoluted tubule, which appear to penetrate the membrana 

 propria. 



rich gangliated plexuses along their course, which are distributed 

 both in the medullary and in the cortical layer as a very diffuse 

 network of nerve fibrils. The primary plexuses that accompany 

 the vessels (Fig. 122, 1} give off secondary branches and arborisa- 

 tions which surround the capsule of Bowman (Fig. 122, 2) with- 

 out, however, penetrating into it, while other ramifications are 



