ISCHURY DYSURY STRANGURY. 517 



Two notable cases of cj^storrlioea used to be related by the 

 late Professor Coleman in his lectures. 



The Professor received a message to attend two mares, 

 dangerously ill, belonging to General Brownrig. Finding, 

 on his arrival, one of them dead, he had her body opened at 

 once, with a view of throwing a light on the nature of 

 the disease under which the other continued to suffer the 

 extremest agony : the symptoms in both cases being analo- 

 gous. The mucous coat of the bladder was discovered in a 

 high state of inflammation, in places mortified and eroded 

 in consequence, apparently, of some caustic substance; a 

 suspicion which was afterwards confirmed by the admission of 

 the coachman that he had introduced some such substance — 

 by mistake — into the bladder, with the intention of exciting 

 the mares to become horsing. By active depletion and copious 

 injections of tepid water into the bladder the survivor was 

 recovered. 



ISCHURY — DYSURY — STRANGURY. 



The first of these terms denotes a total suppression of 

 urine ; the two others, but a partial arrest ; dysury implying a 

 difficulty in staling; strangury, a painful and frequent 

 staling by drops only. In common parley we often make 

 use of the suppression and rete7ition of urine synonymously ; 

 though the former, properly speaking, signifies that no urine 

 is secreted — that there is none in the bladder; the latter, 

 that the bladder is full without the power of evacuation. 



Various causes may give rise to a suppression or reten- 

 tion of urine. The kidneys may be in that state in which 

 they no longer retain the power of secretion : inflammation 

 may put a stop to their function as it does to the functions 

 of other glands. Spasm at the neck of the bladder — which, 

 I believe, occasionally attends colic — may cause ischury or 

 dysury. A calculus may give rise to dysury or strangury. 

 Paralysis of the bladder may likewise prove the occasion of it. 



To draw off a horse's urine, but a few years ago we 

 were told we had no altermitive in the mule but to cut into 



