AND PERSONALITY 



cold north. Therefore, the native of the tropics could not 

 develop exophthalmic goiter or neurocirculatory asthenia, 

 nor is he likely to attain the high rank in scholarship. 



There is a third energy synthesis, or mutation, seen only 

 in civilized man. This third mutation is equally defined, 

 equally individual. The victims suffering from this mutation 

 have larger hearts, greater volume of blood, constant but 

 not abnormally active brains, normal thyroid glands, and 

 normal or slightly larger than normal adrenal glands. These 

 individuals also possess uniquely large celiac ganglia and 

 celiac plexuses and normally are under a high constant 

 internal drive. Whereas the hyperthyroid and the hyper- 

 adrenal subjects tend to sweat and tremble, the individuals 

 belonging to this third energy synthesis have dry skins 

 and rarely tremble. 



The victims of this third mutation are not so brilliant 

 scholastically as are those prone to exophthalmic goiter, 

 but they range in the upper third of their class. In grade 

 school and college they are leaders in athletics, and active 

 in clubs, whereas the candidates for exophthalmic goiter 

 and neurocirculatory asthenia are leaders in the classroom. 

 These individuals are more stable and possess sounder 

 judgment and more courage than the mutants predisposed 

 to exophthalmic goiter and neurocirculatory asthenia. 

 These highly energized, tireless, but stable mutants, in 

 addition to being successful leaders in industry, finance, the 

 professions, in public affairs, and in war, particularly as 

 pilots in aviation, are also candidates for essential hyper- 

 tension and coronary disease. 



Another mutation that is seen in adult civilized man, 

 particularly in the north, is peptic ulcer. This fourth 

 energy mutation is not so clearly defined as are the three 

 previously mentioned, but it has a common characteristic 

 with them in that its members are also highly energized 

 and carry a high order of achievement. It would seem that 

 the inherited mechanism of this group escaped the thyroid 



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