124 T^^^^ Management and Diseases 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 post-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. 



Fig. II. 



CYSTIC CALCULUS (TRIPLE PHOSPHATE) FROM THE BLADDER OF A 

 BITCH (magnified FIVE DIAMETERS). 



