120 PHYSIOLOGY AND HEALTH. 



loaded as to be incapable of action, if there were not some 

 means provided to carry these out of the body. This might 

 seem a difficult matter. These dead atoms are in the veins, 

 and those are buried in the deepest recesses of the body, 

 apparently beyond the reach of any external influence, arid 

 without any outlet to the world abroad. But Nature has no 

 difficulties. Her means are always adequate to her wants. 

 Her process of relieving the living body of those useless and 

 burdensome matters is made simple and easy, by means of 

 the lungs and respiration, and of the skin and perspiration. 



PART III. 

 RESPIRATION. 



CHAPTER I. 



Wasted Particles carried out of the Body. Composition of Blood in 

 right Side of the Heart. Lungs protected by Bones of Chest. 

 Spine. Breast-Bone. Ribs. Position of Ribs. 



263. THE wasted particles of the animal body those that 

 have lived and have been a part of the living system have 

 been rejnoved from their places in the various organs, and 

 carried into the veins, and through them to the right side 

 of the heart. As nutrition and absorption are continually 

 going on in the body, these old particles must accumulate in 

 the veins and heart ; and, as they amount to several ounces a 

 day, they would soon overload and destroy the living system, 

 if they were not carried out from it. This is done; and 

 they find an outlet through the lungs as fast as they are 

 removed from their original places of life and action in the 

 various tissues. 



264. The venous blood that which is gathered in the 



