124 The Management and Discases of the Dog. 
auricle of the heart were full of dark, coagulated blood ; the 
bladder was contracted, and contained no urine ; its coats 
appeared thickened ; and on making a section to examine 
the state of the mucous membrane two ‘calculi’ were ob- 
served possessing spines, or spiculated points; such an 
arrangement is very unusual. The concretions must have 
been a source of irritation to the organ, and would account 
for the pain and difficulty of urinating the bitch had 
experienced for nine months. 
“From the results of many fost-mortem examinations, 
we are led to conclude that cystic calculus in the dog is-of 
much more frequent occurrence than has hitherto been sup- 
posed. 
“Messrs. Gowing & Son forwarded the morbid parts 
of the bitch for examination. The calculi were so peculiar 
in form that we deemed them worthy of an illustration. 
Chemically the concretions are composed of triple phos- 
phate. Physically the prisms are arranged on very fine 
plates, and stellate masses, as shown in the drawing of one 
of the calculi, magnified five diameters and outlined with 
the camera. 
Fic. 11. 
CYSTIC CALCULUS (TRIPLE PHOSPHATE) FROM THE BLADDER OFA 
BITCH (MAGNIFIED FIVE DIAMETERS). 
