25. THE LAW OF ENERGY 



RELEASE: THE LIFE LINE 



IN THE preceding pages we have discussed whether or not 

 the intelligence, power, and personality in wild and 

 domestic animals are created by the work of the brain, the 

 heart, the thyroid gland, and the adrenal-sympathetic 

 system. We have found that whether the animal is warm- 

 blooded or cold-blooded, whether the habitat of the animal 

 is the tropics, the arctic, the land, the air, or the sea, the 

 variation in the size of the brain, the heart, the volume of 

 the blood, the thyroid gland, and the adrenal-sympathetic 

 system is the only cause of variation in the intelligence, 

 power, and personality. 



Since, throughout the animal kingdom, the primary role 

 of the brain is to maintain the body temperature and to 

 drive the muscles and organs in attack and escape and 

 since, in the warm-blooded animals, 75 per cent of the food 

 intake is required for the maintenance of the warm-blooded 

 state, we searched for some fundamental regularity or 

 general law underlying the release of energy in all animals 

 that would be expressed by the ratio of the weight of the 

 thyroid gland to the gross weight of the animal. A trend, 

 but no law, was found. 



We next searched for a law that would express the ratio 

 of the weight of the adrenal glands to the weight of the 

 animal. Again a trend, but no law, was found. 



We then attempted to find a law based on the ratio of the 

 weight of the brain to the body weight of the animal. Once 

 more a trend, but no law, was found. 



The ratios of the combined weights of the brain, the 

 thyroid glands, and the adrenal glands to the body weights 

 of the various animals were next tested. Here, too, a trend, 

 but no law, was found. 



Finding that the relationship of the brain, the thyroid 



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