THE URIXAKY ORGANS. 



Fig. 218. 

 Jf 



335 



Various preparations to show the stmctur 



I. Three portions of the uriniferous tubes from Kana eteulenta, from a natural injection with 



siilphindigotate of sodium (Hartnack, Oc. I, Syst. 3). G. H. 

 II. From the third part of a uriniferous tube ; short ciliated epithelium, borax-carmine (Hart- 



nairk, Oc. I, Syst. 7). G. H. 



III. A Malpighian corpuscle and capsule ; shows the capsule of two layers at a. After Duncan. 

 IV. Part of uriniferous tube after natural injection with sulphindigotate of sodium (Hartnack, 



Oc. I, Syst. 3). G. H. 

 V. Transverse section of one of the larger branches of the ureter, from Kana esculenta (Hartnack, 



Oc. I, Syst. 7). G. H. 



VI. Epithelial lining of the ureter itself while still in the kidney (Hartnack, Oc. I, Syst. /). G. H. 

 VII. Portion of a uriniferous collecting-tube from section in Fig. 217 I, stained with silver {Hart- 

 nack, Oc. I, Syst. 7). G. H. 

 VIII. Renal epithelium ; a to 6, tubulus contortus ; 6 to c, third portion of uriniferous tube ; c to d , 



fourth portion of tube. After Heidenhain (enlarged 210 times). 

 IX. Ciliated cells of the neck, after Duncan. 



X. Isolated rod-cells of Triton taeniatus, after Heidenhain. 

 XI. Isolated rod-cells, after Heidenhain (enlarged 300 times). 

 XII. Isolated cells of the neck, after Heidenhain (enlarged 210 times). 



XIII. Portion of the fourth part of a uriniferous tube, after Heidenhain (enlarged 300 times). 



XIV. Ciliated epithelium of tubulus contortus, after Tornier (magnified 550 times)! 

 XV. From kidney of Rana temporarla, after SpengeL 



a Uriniferous tube opening into seminiferous duct. 

 I Dilated seminiferous duct cut longitudinally. 

 c- Vas etferens cut transversely. 



