27 



When the blood has been distributed 

 to the various parts of the body, by the 

 arteries, and has served its purpose of nour- 

 ishing the tissues, it is picked up by the 

 venous capillaries, and carried back, by 

 the veins, to the heart, for redistribution. 

 It is now forced to go through a process 

 of purification before re-entering the arte- 

 ries. It comes back to the heart, purple 

 in color, loaded with carbon waste, and 

 the effete remains, of the growth and de- 

 cay of cells. Not one drop of that blood 

 is allowed to enter the arteries again until 

 it has passed through the lungs and been 

 exposed freely to fresh air. Not only this, 

 but the fluid contents of all the lympha- 

 tics, and of all the lacteals with their loads 

 of emulsed fat, and the new material. 



