AND PERSONALITY 



The ratios of the weights of the thyroid glands and of the 

 adrenal glands to the metabolism of the various animals 

 showed a trend, but not a law. 



1000 



100 





ELEPHANT 



(/) ALLIGATOR 



ALLIGATOR \CH.MPANZEE 



O.ANTTVLE . G 60AT 



000 G S 



Z SHEEP 



RHESUS 



MONKtY 



TUR I LE PELICAN 



-J RABBIT CAT 



^ RATTLER EA&LE CRANE 



LU FLAMINGO 



Of GUINEA ?!& OWL 



WILD RAT 



i_ 

 ~ < 



ALBINO RAT 

 PI&EON 



MOUSE 



SPARROW 



OXIDATION IN CALORIES PER. DAY 



I I \ L_ 



10 100 1000 10.000 100.000 



FIG. 36. In relation to metabolism the weight of the adrenal glands shows a 

 trend but not a law. 



At this point it will help to clarify the relative role of the 

 various organs of the energy-controlling system if we recall 

 that the brain in the higher animal is the exalted analogue 

 of the nucleus of the amoeba; hence the brain is the one 

 and only executive or controller of energy in an animal. 

 Therefore, since it is the function of the brain alone to 

 execute the oxidation or metabolism of the body for the 

 long and the short rhythms of both the thyroid and the 



209 



