MALE ORGANS OF REPRODUCTION 



491 



mediastinum they are abruptly transformed into peculiar efferent ducts, 



10 to 15 in number, which pass into the globus niajnr of the cpi<li<lyniis 



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



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 ruga 3 . 



In the lining epithelium there 

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

 rest upon the basement mem- 

 brane and carry upon their free 



ends a tuft of short cilia. These d > '? lan j.' ir longitudinal section; d' 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 



OF AN EFFERENT DUCTULE OF THE TES- 

 TICLE. 



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

 Hematein and eosin. Photo. X 250. 



