30 



IS not supplied, as in the case of a close 

 stable, the purple, impure venous blood, 

 coming to the lungs, finds an inadequate 

 supply of oxygen, and the changes so es- 

 sential to life are only partially effected. 

 The waste is not all consumed, and, con- 

 sequently, we have loss of animal heat not 

 only, but the unburned tissue waste is 

 carried back by the arteries to the tissues, 

 in spite of nature's care to prevent it, and 

 acts as a poison to the whole body. 



Nature, truly, sets up certain vicarious 

 actions, to partially remedy the defect, but 

 is handicapped in its efforts. It sets the 

 kidneys to do extra work, and the urine 

 becomes loaded, and the kidneys may suf- 

 fer damage, for trying to do what should 

 have been done in the lungs. The skin 



