INTELLIGENCE, POWER, 



amount of work per mass. The heart muscle itself with its 

 unique blood supply is maintained at such a high level of 

 activity that the greatest percentage of deaths in the 

 United States is caused by cardiac disease. 



Thus we see that the varying potentials required to 

 change the rate of oxidation for all the purposes of civilized 

 man depend on the two axis partners, the brain and the 

 heart. 



The third biological principle, that in the habitat temper- 

 ature of an animal I gram of brain is required to execute 

 12,115 sma ll calories in 24 hours, offers a unique opportu- 

 nity for estimating that part of the brain for animal require- 

 ments and that part of the brain for distinctly human 

 requirements. 



The brain-oxidation law expresses the basal metabolism 

 common to all animals, including man. The "animal brain" 

 represents the requirements of energy for growth, for the 

 maintenance of the protoplasm of the body, for the main- 

 tenance of the warm-blooded state, for the digestion of 

 food, for procreation in fact, for all the basic energy 

 required in the wild and domestic state of animals and man. 



Since man has been differentiated from the lower animals 

 by a significant development of a thinking brain and since 

 the critical study of metabolism by Francis Benedict 

 revealed that little or no oxidation is required for abstract 

 thinking, we now have a method by which we are able to 

 estimate the weight of the thinking part of the brain of 

 man. 



In the consideration of the thinking brain we include the 

 vast numbers of brain cells whose oxidation supplies the 

 electric energy that etches in the white matter of the brain 

 the many patterns of action of the human being, especially 

 those established through the use of the manipulative hand, 

 the erect posture, and the vast numbers of mental, physical, 

 and emotional acts that civilized man executes in the course 

 of his life. In the large brain of civilized man there are 



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