INTELLIGENCE, POWER, 



high-sustained activity of the heart is here clearly illus- 

 trated in the supremacy of the adrenal gland in the rushing 

 jaguar as compared with the smaller adrenal gland in 

 the long-distance-running impala and timber wolf. Note the 

 small heart of the rushing jaguar in comparison with the 

 large heart of the long-distance-running wolf and antelope. 

 Note, also, the slightly larger brain of the timber wolf 

 taken in the cold north as contrasted with the brain of the 

 impala and the jaguar collected in the tropics. 



In the cat family the energy equipment is centered upon 

 the brain-adrenal-sympathetic system in order that energy 

 may be mobilized quickly for a rush attack. This requires 

 a large brain and a large adrenal-sympathetic system. 



In the dog family, for example, the wolf and, among the 

 grass eaters, for example, the impala, both the pursuers and 

 the pursued meet their fate in the run of destiny. There- 

 fore, their equipment must be one that will produce long- 

 continued energy. This requires a large brain, a large heart, 

 a large thyroid gland, and a lesser sized adrenal gland. 



These are the blueprints of the energy-controlling organs 

 in the wild state of the cat family, the dog family, the grass 

 eaters and the leaf eaters. 



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