DETENTION OF URINE. 



a wooden handle is employed, and fits accurately to the 

 tube. 



In using this catheter, the little instrument here drawn is 

 often employed to tipen the mouth of 

 the urethra, and facilitate the introduc- 

 tion of the tube. The catheter is pushed 

 up to the notch of the ischium, the stilet 

 is then withdrawn, and the tube is 

 pressed into the bladder. As the stilet 

 is withdrawn, the flexible tube turns 

 aaturally into the bladder. 



The elastic tube for mare or cow is 

 tbout eight inches in length, and from 

 three to four lines in thickness. 



In the ox the catheter cannot be used, Fig 



in consequence of the curve in the penis, shown in the annexed 

 engraving 



Fig. 165. 



a Urinary bladder. /. Commencement of the cavernous por- 



6. Ureter (divided.) tion of the penis (removed.) 



c. Vesicula seminales. 0. First, ) 



d d Membranous or pelvic portion of the h. Second, > Curves of penis. 



urethra * Third, ) 



e. Muscular coat of urethra. fc. Anterior extremity of the penis. 



1 1. Retractus of the penis. 



