344 Veterinary Medicine. 



in cows when sharp-pointed metallic bodies from the stomach 

 make their way into its substance. An alleged case of rupture 

 following ulceration of the walls of the right ventricle is recorded 

 by Gaullet. 



Inflammation, softening, fatty and calcareous degeneration, 

 dilatation, atheroma, and the presence of parasitis in its substance 

 render the heart more friable and predispose to rupture. 



Lesion. The rupture is often at the fibrous ring encircling the 

 aorta or pulmonary artery ; in other cases in the muscular wall of 

 ventricle or auricle. 



Symptoms. Death may be practically instantaneous. If de- 

 layed there is hurried breathing, anxiety, weakness, pallor of the 

 mucous membranes, staggering, trembling, vertigo, .stupor, and 

 convulsions. 



