TnE UKiXAKv our; ANS. 337 



The lobules of tlio kidney. AVlion treated witli ])r()j)er rea<^'onts 

 the kidney sliows a marked tendency to separate into lolndes (V'vj;. 



219 I)- 



The lymphatics of the kidney (Fi^". 216 III ') form an irrej^ular 

 network of fine canals witli eh)n<^ated meshes. They nin ehielly 

 in the direction of the blood-vessels. The lar<;e vessels, which 

 supply the kidney, are surrounded by larj^e lymphatics.] 



The nerves of the kidney (Fij^-. 219 II)'. Little is known of 

 these. Nerve-tibres have been traced alonj^side the lar<^er blood- 

 vessel throui»h the o^reater part of the kidney. 



K. '^riie ureters. 



a. General description. In tlie m:iles tlie ureters are, at the 

 same time, the seminiferous ducts, J*]ach ureter commences on the 

 dorsal surface of the kidney by bifurcating branchi's, which are 

 continuous with the collecting-tubes of the kidney. In the anterior 

 two-thirds of the kidney the ureter is wholly on the dorsal surface; 

 at the junction of the middle and posterior thirds it winds round to 

 the oiiter border of the kidney (Fig, 214 Ur), and there lies in a 

 groove accompanied by the renal ])ortal vein (Fig. 220 f'r and la), 

 the two organs being intimately attached to the kidney sidjstance 

 and enclosed by the fibrous capsule (Bf/). 



This portion f)f the ureter possesses a spindle-sliai)ed enlargement, 

 which represents the liccepfacvluui Hanin'iH. In Unna (ctiqtornrïn the 

 Receptaculnm seminis forms a large saccular dilatation. 



In its further course the ureter runs backwards and slightly 

 inwards, converging with its fellow of the opposite side; the ureters 

 lie free in the abdominal cavity, and terminate by two openings 

 placed side by side in a groove on the dorsal wall of the cloaca 

 (Fig, 2i4'^,'S'i), 



In females the ureters are intimately attached to tlie dilated 

 oviduct, immediately after leaving the kidney; tliey pursue a 

 similar course to those of the males, but are attached to the oviduct 

 in the whole of their course to the cloaca, 



b. Minute structure. Tlie ureter is a tube composed of connective- 



' See Plate II. 



Twii i)ortiiins fr<ini a gold inejaration nî the kidney of Htinn cxnili'iilti. -('•. H. 



I. Showing tlie tendency to «plit into lobnlea, 

 II. Neive-fibies accorajKinying the l>Iood-ve.i«el«. 

 a liliKxl-veiktelM. 

 b Xerves. 



