DISEASES OF THE HEART, BLOOD VESSELS, AND LYMPHATICS. 



DESCRIPTION OP PLATE. 



Plate VII: 



Diagram illustrating the circulation of the blood. The arrows indicate the 

 direction in which the blood flows. The valves of the heart, situated 

 between the right auricle and ventricle, and left auricle and ventricle, 

 and between the ventricles and large arteries, are represented by curved 

 lines. These valves are intended to prevent the flow of blood in a direc- 

 tion contrary to that indicated by the arrows. 



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