AND PERSONALITY 



What is the difference between man and the ape as to 

 intelligence, power, and personality ? In monkeys, baboons, 

 and apes the adrenal glands are much larger than the 



__. Sympafhef/c 



chain 



Adrenal 

 q/ctnd 



. Splanchnic 

 nerve 



Coe/iac 

 gang/ion 



dor fie plexus 



FIG. 25. The sympathetic nervous system of the duck bill (the lowest order of 



mammals). . 



thyroid gland. In man the reverse holds; the thyroid gland 

 is 2^-2 times the size of the adrenal gland. The gorilla, the 

 chimpanzee, and the monkeys have probably reached the 

 highest level of intelligence possible in the presence of 

 preponderating adrenal glands. A thinking, reasoning brain 

 is possible only with a high level of thyroid control. 



Upon what basis is the statement made that memory, 

 reason, and imagination in other words, training and 



195 



