54 ABSCESS AND FISTULA. 



sank. Pus was found effused in the abdomen. The right 

 kidney was four times its natural magnitude. Its pelvis, 

 greatly distended, contained about three pints of grumous 

 pus, communicating outwards through an opening in the 

 posterior border of the kidney, which led into the fistula 

 that had formed between the peritoneum and psoas muscles. 

 The left kidney was larger than common, and its pelvis was 

 distended with nearly a quart of limpid urine. The bladder, 

 shrunk and thickened in its coats, contained but very little 

 urine, and that sedimentous." 



CYSTITIS. 



Inflammation of the urinary bladder is due to causes very 

 similar to those which induce nephritis. I have seen this 

 disease as the result of the internal administration of cantha- 

 rides. It is attended with serious complications in the 

 shape of irritation of the intestine, and even nephritis. 



Symptoms. The mouth and fauces, and indeed the whole 

 of the alimentary canal, being excessively irritated or in- 

 flamed, the buccal membrane is red, and there is consider- 

 able difficulty in swallowing. Dogs vomit, and efforts of 

 a similar nature are made by horse and ruminants. The 

 genito-urinary organs are very much affected; sometimes 

 there is diuresis, at others, strangury ; the testes are drawn 

 up close to the inguinal canal. In all animals there appears 

 to be a certain degree of sexual excitement. The urine is 

 voided with difficulty and pain, as it is irritating and burn- 

 ing; it is highly albuminous; the faeces are covered with 

 mucus and mixed with blood. At first the animals appear 

 excited, and soon prostration of strength supervenes; cold 

 sweats bedew the body; there are muscular twitchings, 

 paralysis of the hind quarters, and death. 



Post-mortem appearances. The intestinal tube and 



