PLAN OF CIRCULATION. 



243 



The blood from the kidneys, probably the purest blood in 

 the body, joins the same impure stream. From the Aorta,, red 

 blood, usually called pure, is sent to the kidneys and to the 



Lung Capillaries 



Pulmonary Vein 



Pulmonary Artery 



f- Right Auricle 

 Right Ventricle 



Caval Vein 



Body Capillaries 



Fig. 73. Diagram of the Circulation, representing the Right and Left Halves separated, 

 showing that the Blood makes but one Circuit. (Dorsal View.) 



skin to be purified. Yet, as this mixed blood flows through 

 each organ, that organ, so long as it is in health, takes from 

 it only what it should take. The kidney takes, during health, 



