THE CIRCULATORY SYSTEM. 



207 



CHAPTER III. 



-DISEASES OF THE CIECULATOEY 

 SYSTEM. 



Section 1. — Or the Heart. 



It will be remembered that tbe heart of the ox is 

 small as compared with that of the horse_, and averages 

 about 34 to 4i lbs. in weight. It is estimated by Colin 

 ^^ ih ^^ 2B3 parts of the weight of the body, that of the 



Fig. 32. — Thoracic contents, as seen from the left side. (Simonds.) 



horse being ~ to y'y. The apex is very pointed, and 

 there are three ventricular furrows. There is a very stout 

 muscular moderator band in the right ventricle, below 

 which is a large tendinous band. In consequence of the 

 comparative shortness of the chest in the ox, the peri- 

 cardium extends nearly to the antero-inferior part of the 



