THE URINARY ORGANS 265 



Case 2. — A collie, nine years old, was brought for treatment on account 

 of a peculiar straddling gait of the hind-legs, inability to walk more than 

 about 10 yards without resting, difficulty in rising after lying down, and 

 pain when pressure was applied to the loins and flank. The latter was 

 probably due to over-distension of the bladder, as when urination was 

 attempted a certain amount of difficulty was experienced at the com- 

 mencement, this being followed by the passai^e of an abnormally large 

 quantity. Rectal examination revealed an enlarged prostate gland. 

 Castration was performed under chloroform, and ten days later the im- 

 provement was most marked, the urine being passed easily, and the 

 prostate very perceptibly less. The improvement was permanent. 



Case 3. — A Dandle Dinmont, about eleven years old, was brought with 

 a history of difficulty in urination, straddling gait, and evident pain when 

 passing' urine. The prostate was enormously enlarged, and painful on 

 pressure. After castration relief was shown within three days, the urinary 

 ilow was unimpeded, and progress to recovery uneventful. The patient 

 was kept under close obser\'ation for more than two years afterwards, and 

 there was no evidence of relapse- 



