Ti6 THE PARM DOCTOR. 



degeneration of the entire muscular system, especially in pig.^ 

 There are the general phenomena of chronic heart-disease and 

 dilatation, and the condition is irremediable, though it rarely 

 kills animals kept in perfect quiet. 



RUPTURE OF THE HEART. 



If from severe exertion this usually takes place tlirough the 

 fibrous structure at the base of the ventricles connecting them 

 Avith the large arteries. If from a fall or violent concussion the 

 muscular walls usually give way, when found in a relaxed con- 

 dition, or the laceration happens at the point of connexion with 

 the veins {vena azygos). Perforation from ulceration is seen in 

 cows in connexion with sharp-pointed bodies that have been 

 taken into the stomach. Death is sudden in all such cases. 



OTHER HEART-DISEASES. 



The heart is further subject to a great variety of diseased 

 growths and deposits and to parasites — Echinococcus, Cysticercus 

 Tenuiccllis (sheep and calf), Cysticercus Cellulosa and Trichina 

 Spiralis (pig), Ruineys Cysls (cattle), and Filaria Ivimiti: (Jog). 



