CASE OF POLYPUS IN A MARE. 
565 
are led to conclude that cystic calculus in the dog is of much 
more frequent occurrence than has hitherto been supposed. 
[Messrs. Gowing and Son forwarded the morbid parts of 
the hitch for examination. The calculi were so peculiar in form 
that we deemed them worthy of an illustration. Chemi¬ 
cally the concretions are composed of triple phosphate. 
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. 
A small quantity of the contents of the bladder having the 
appearance of pus was also sent; the colour and consistency of 
the fluid, however, were found under the microscope to depend 
not upon purulent contamination, but entirely upon the pre¬ 
sence of an abundant precipitate of ammonio-rnagnesian phos¬ 
phate, the prismatic crystals of which were very large and well 
defined. A quantity of the same deposit covered the lining 
.membrane of the bladder, the walls of which were thickened. 
The pelvis of the right kidney was much dilated, but these 
organs were otherwise healthy. 
Messrs. Gowing’s view of the frequency of calculous con¬ 
cretions in the dog is supported by the results of their own 
practice. We are indebted to them for several very interest¬ 
ing cases, but none more so than the one which is recorded 
in the present number of the journal.— Eds.] 
CASE OF POLYPUS IN A MARE. 
By Thomas Mellis, Veterinary Surgeon, Inverurie, 
Aberdeenshire. 
In the month of September, 1868,1 was requested to attend 
a mare and horse at one of the farms belonging to William 
Partridge, Esq., Ardmurda, near Inverurie. The messenger 
informed me that they had got “ the cold.” 
When I first saw them, to all appearance they seemed to 
be affected with simple catarrh, and I treated them accord¬ 
ingly. In a few days the horse recovered, but on October 2nd 
I was again sent for to the mare, and I found her oppressed 
ill the breathing, with swelling of the parotid glands and 
tenderness in the larynx. I suspected laryngitis, and treated 
for such. 
October 6.—Breathing getting worse, muco-purulent dis- 
