308 DISEASES OF DOMESTICATED BIRDS 
Fig. 62. Spreader in place. The testicle can be observed lying between the 
jaws of the spreader. (Drawn from photograph by Slocum ) 
1 
Fig. 63. Removing the testicle. (Drawn from photograph by Slocum) 
cient to obscure the lower. ach testicle is enveloped in a thin mem- 
brane. This may be and probably is best removed with the testicle, 
though some operators tear it open and remove the testicle only. 
The delicate part of the operation is now at hand, owing to the close 
proximity of the spermatic artery, which runs just back of the testicle 
and to which the testicle is in part attached. If this is ruptured the 
fowl will bleed to death. The cannula, threaded with a coarse horse- 
