MALE ACCESSORY REPRODUCTIVE ORGANS 237 



(p. 233), the clotting which causes the formation of the " bouchon ' ' 

 in Rodents is believed by Camus and Gley l to be due to a fer- 

 ment (" vesiculase ") which is present in the prostatic fluid_._ 

 The removal of the prostate in Steinach's experiments had 

 no effect in diminishing sexual desire. 



Walker 2 has also adduced experimental evidence pointing 



FIG. 57. Section through prostate gland of monkey. 



a, tubular alveolus lined with epithelium ; 6, alveolus containing concretion 

 in lumen ; c, bundle of muscular fibres in connective tissue ; rf, blood- 

 vessels in stroma. 



to the conclusion that the prostatic fluid of the dog stimulates 

 the sperms to more active movement. 



Iwanoff's experiments 3 (see p. 234), however, show that 

 spermatozoa which have never come into contact with prostatic 



1 Camus and Gley, loc. cit. 



- Walker (G. ), " Beitrag zur Kenntniss der Anatomie und Physiologic der 

 Prostata beim Hunde," Arch. f. Anat. u. Phys., Anat. Abth., 1899. 

 3 Iwanoff, loc. cit. 



