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 observedto 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.” 
