506 DISEASES OF THE URINARY ORGANS. 



for two months, affected, it was said, with an incontinence of urine. While 

 he remained out the weather proved very unfavorable, and he gradually 

 declined in health. In this state he was returned to his former owner, 

 who had him destoyed the following July. The urinary apparatus was 

 sent to the College for examination. The coats of the bladder were 

 thickened, but, otherwise, healthy in appearance. The incision made 

 through its neck, membranous part of the urethra, and perinasum, was 

 quite healed. The right kidney and ureter were enlarged, and contained 

 purulent matter, the consequence of the formation and descent of a fresh 

 calculus, which was found lodged within the canal about three inches before 

 its termination in the bladder. Its hardness and roughness, and irregular 

 shape, appeared to have stayed its progress into the bladder. Some small 

 calculi were also foutid within the kidney. To these irritations ]\Ir. Sewell 

 ascribes, sympathetically, the incontinence of urine. 



The next case was a small thorough-bred horse — a racer. 

 The calculus, which was about the same size and form as the 

 preceding one_, was extracted by a similar operation. He 

 was worked regularly for two years afterwards, and subse- 

 quently sold, in consequence of his owner not requiring his 

 services any longer. 



The third case was a stout chaise-horse. The same opera- 

 tion proved entirely successful. The horse has been actively 

 worked since. The calculus proved rather larger than in 

 the other cases. 



LiTHOTRITY PERFORMED BY Mr. AdAM PoPE, TaRVIS, 



Aberdeenshire. This gentleman wrote to Mr. Dick, re- 

 questing his advice concerning a mare, who every ten 

 minutes was discharging her urine, and so suddenly that she 

 had not time to camp herself; the consequence of which was, 

 the running of the urine down her thighs and legs, excoriating 

 them. Her urine was tinged with blood. Mr. Dick con- 

 ceived the case might be one of stone, and recommended 

 manual examination, and the extraction of it by dilatation. 



Mr. Dick's opinion proved correct ; and Mr. Pope proceeded to the 

 operation " by introducing the left hand into the rectum, and with it press- 

 ing the stone towards the opening of the urethra." — "I had thus a full 

 view of the orifice ; but finding, from the size of the calculus, that it 

 would require an uncommonly large wound to allow of the extraction of 

 the stone in one piece, I merely dilated the urethra by making an incision 



