AND PERSONALITY 



namely, the brain, the heart and blood volume, the thyroid 

 gland, the adrenal-sympathetic system, and the celiac gan- 

 glia in the various species of animals in their wild state 

 might account for the variation in the intelligence, power, 

 and personality of animals and perhaps elucidate the nature 

 of certain energy diseases in man. To that end we embarked 

 on a research in comparative anatomy and physiology 

 during the course of which we collected the energy-con- 

 trolling organs of 3,734 animals from many parts of the 

 world. 



The first field collection was made in 1931 by the Crile- 

 Bole-Fuller expedition to Arizona, 1 when Robert Crile col- 

 lected and preserved the thyroid and adrenal glands and 

 determined the size of the brains of animals ranging from 

 small rodents to the mountain lion. 



The preponderance of the adrenal glands, which govern 

 emergency energy, over the thyroid gland, which governs 

 the level of constant energy, was shown in all the animals 

 that were collected. 



This expedition also yielded the significant fact that in a 

 pursuing animal, such as a coyote, and in a fleeing animal, 

 such as a deer, the weight of the thyroid gland and the 

 weight of the adrenal glands are more nearly equal, the 

 adrenal glands being but slightly heavier than the thyroid 

 gland. 



The research was extended to include the thyroid and 

 adrenal glands from wild animals and birds in northern 

 Ohio and from various species of domestic animals and of 

 animals taken from zoological gardens, but the latter studies 

 showed the presence of goiter in varying degrees in a large 

 proportion of the domestic and zoo animals. 



We next studied the wild life of the beautiful Cumberland 

 Island, off Georgia, where there is no goiter and where 

 alligators, Florida deer, and sea turtles are abundant. 



1 CRILE, ROBERT, "The Comparative Anatomy of the Thyroid and Adrenal 

 Glands in Wild Animals," Ohio Journal of Science, Vol. XXXVII, No. I, 1937. 



