MALE OEGANS OF KEPRODUCTION 



491 



mediastinum they are abruptly transformed into peculiar efferent ducts, 

 10 to 15 in number, which pass into the globus major of the epidldymis 

 and by means of spiral windings form conical masses, coni vasculosi, 

 whose apex projects into the glo- 

 bus major. The epithelium of 

 these tubules is peculiar in that 

 it contains two varieties of cells, 



and in that it is thrown into 

 many prominent longitudinal 

 folds or rugae. 



In the lining epithelium there 



are short columnar cells which FIG. 435. A SMALL PORTION OF THE WALL 



OF AN EFFERENT DUCTULE OF THE TES- 

 TICLE. 



rest upon the basement mem- 

 brane and carry upon their free 

 ends a tuft of short cilia. These 



d, 'glands' in longitudinal section; d r , the 

 same in oblique section; F, ciliated epithe- 

 cells have an ovoid nucleus and a ii um . x 140. (After Kolliker.) 



very finely granular, eosinophil 



cytoplasm. Between and among the ciliated cells are many broad col- 

 umnar or polyhedral cells, having remarkably clear cytoplasm, which 



FIG. 436. EFFERENT DUCTULES OF THE RABBIT'S EPIDIDYMIS. 

 Hematein and eosin. Photo. X 250, 



