THE STRUCTURE OF THE TESTICLE. 

 A Fig. 213.* B 



735 



* 



* Fig. ^3. A, spermatic fila- 

 ments fromj the human vas deferens 



jH fa M M (fr m Kolliker). i, magnified 350 



^i l jL J/JL Xfi diameters ; 2, magnified 800 dia- 

 meters ; a, from the side ; b, front 

 above. B, spermatic cells and 

 spermatozoa of the bull undergoing 

 development (from Kolliker) *-p. 

 i, spermatic cell^orith one or two 

 nuclei, one of theljKfclear ; 2, 3, free 

 nuclei, with sperltttic filaments 

 forming ; 4, the filaiflj&its elongated 

 and the body widened f 5, filaments 

 nearly fully developed. C, escape 

 of the spermatozoa from their cells 

 in the same animal, i, spermatic 

 cell containing the spermatozoon 

 coiled up within it ; 2, the cells elon- 

 gated by the partial uncoiling of the 

 spermatic filament ; 3, a cell from 

 which the filament has in part be- 

 come free ; 4, the same with the 

 body also partially free 1 ; 5, sperma- 

 tozoon from the epididymis with vestiges of the ceil adherent ; 6, sper- 

 matozoon from the vas deferens, showing the small enlargement, b, on 

 the filament. 



