342 THE UlilNO-GENlTAL SYSTEM, THE ADRENALS, ETC. 



bifurcate at acute angles, just before entering the kidney. Most of 

 the tubes so formed open into the collecting-tube ; a few, however^ 



Eig. 223. 



// 



o- 





-r 



III 



Various preparations from the testis. 

 Various stages of the spermatozoa ; from testis of Rana temporaria. After Neumann. 

 Section from testis of liana esctiknta (Hai'tnack, Oc. I, Syst. 7). — G. H. 



a Thin connective-tissue capsule. 



b Trabeculae. 



c and d Seminiferou.s tubes. 

 From testis of Rana temponiria. After Xeuniann. 



X Rounded epithelium of seminiferous tubes. 



y Spermatoblasts. 

 IV. Surface view of seminiferous tube of Rana temporaria. After Neumann. 



a Granular protoplasmic feet of spermatoblasts. 



6 Rounded epituehum, 



end blindly in the mesorchium (I, t)- The course of the T'asa e^'ereniia 

 from the testis is first inwards, within the mesorchium ; on reaching 

 the kidney they curve dorsal wards between that organ and the 



