AND PERSONALITY 



lished and the thyroid gland is about 2)-^ times larger than 

 the adrenal glands. This suggests the evolution of the 

 adrenalized ape to the thyroidized man and also interprets 



Coeliac artery 

 Sup. mes. artery 



Greater splanchnic 



Coeliac ganglion 



Adrenal 



Renal ganglion 



Renal artery 



FIG. 30. The sympathetic nervous system of the cetacea (white whale). 



the adrenal influence in the behavior of infancy, childhood, 

 and adolescence. 



Although the following fact may not greatly reinforce the 

 significance of this observation in the fetal life of man, it 

 presents an analogy. 



The thoroughbred horse is the result of a cross between 

 Arabian stallions and English mares. In the Arabian stal- 

 lion the thyroid gland is larger than the adrenal glands. 

 In the thoroughbred horse the adrenal glands are larger 



199 



