DISEASES OF THE URINARY ORGANS. 115 



With fegard to ^remedies for the disease, small doses of 

 opium 'combined 'with iron. fOrms the best medicinal treat- 

 ment. 



Opium y^ grain. 



Ferri Sulph. 5 grains. 



One dose, twice daily. 



Alkalies are also useful, as the citrate of potash or carbon- 

 ate of soda ; either will be readily lapped in milk. Mucila- 

 ginous drinks should be freely given, and the diet be much 

 the same as in the acute form, only more generous. Paint- 

 ing the perinaeum with iodine, or, in protracted cases, pencil- 

 ling with nitrate of silver, is attended with considerable bene- 

 fit. If there is much pain, thin gum mucilage to which a 

 grain of opium is added, or a decoction of poppies, may be 

 injected in the bladder. 



CYSTIC CALCULI. 



Stone in the bladder of the dog is probably more frequent 

 than is suspected, though the records in canine literature are 

 few. 



Mr. Blaine mentions a case of a Newfoundland dog, in the 

 bladder of which he found from forty to fifty calculi. (See 

 p. 122.) 



Mr. Youatt observes : " Of the nature and causes of 

 urinary calculi in the bladder we know very little. We only 

 know that some solid body finds its way, or is formed, there, 

 gradually increases in size, and at length partially, or entirely, 

 occupies the bladder. Boerhaave has given a singular and 

 undeniable proof of this. He introduced a small round peb- 

 ble into the bladder of the dog. The wound iperfectly healed. 

 A few months afterwards the animal was killed, and there 

 was found a calculus of considerable size, of which the peb- 

 bl-e was the nucleus." 



