122 The, Management and Diseases of the Dog. 



solution caused an abundant white precipitate, which was 

 found, under the microscope, to consist of phosphate of lime 

 with stellate crystals of triple phosphate. It was therefore 

 evident that the concretions consisted of this salt, in com- 

 bination with phosphate of lime. The causes which led to 

 the deposit are not apparent in the history of the case, but 

 there is no doubt that the urine was highly charged with 

 phosphatic matter, and, it may be, rendered alkaline, 

 probably from mal-assimilation ; and in such a state of the 

 fluid the phosphate cannot be maintained in solution. 



" Our limited literature on this subject does not permit 

 us to refer to many instances of calculus in the urinary 

 organs of the dog ; but two cases occur to us, both possessing 

 some points of interest. One instance of vesicular calculus 

 is recorded by the late Professor Morton in his pamphlet 

 on ' Calculous Concretions.' The animal affected with the 

 disease was a very small spaniel ; the calculus was so large ^ 

 as to nearly fill the bladder, and was felt easily through the 

 walls of the abdomen. The next case was one of renal 

 calculi,* forwarded to us by Mr. Clarke, of Islington. No 

 history of the case was given, but the morbid specimen is 

 in itself of considerable interest. In both kidneys there are 

 several small calculi, the largest is of the size of a horse- 

 bean, and is lodged in the pelvic cavities. In composition, 

 all these concretions from the several dogs are closely 

 allied." 



"retention of urine associated with calculi inthe bladder 



OF a bitch of the king CHARLES BREED, AGED TEN YEARS. 



■ " By Messrs. Gowing & Son, M.R.C.V.S., Camden Town. 

 " Thebitchwas observed to be dull and offher appetite for 

 the last three or four days. Some time previously she had 

 tried to urinate, passing a drop or two occasionally, but no 

 effort could produce a full stream, and lately it was reported 



* Already alluded to in •' Renal Calculi." 



