INTELLIGENCE, POWER 



be no question but that undue meteorological disturbances, 

 with their reflection in tissue stimulation (lessening of 

 blood pressure) will often be followed by overcompensation, 



New Hampshire -323 

 302-310 

 250-300 

 200-250 



FIG. 40. Death from heart disease [American mortality, 1932 (per 100,000 

 population)]. (From J. S. Whitney, "Heart Disease Mortality Statistics," American 

 Heart Association, 1934. Reproduced from William F. Petersen. M.D., " The Pa- 

 tient and the Weather"} 



with spasm, and with increased blood pressure. In the 

 unstable person this may ultimately, along with other 

 factors, lead to the hypertension that we see in young 

 individuals. In scientific terminology we discuss the under- 

 lying change as an arteriolosclerosis and speak clinically 

 of malignant hypertension." Petersen's map shows the 

 incidence of hypertension found in the United States draft. 

 In the foregoing discussion of the relation of climate to 

 disease, it will be noted that the diseases mentioned are 

 peculiar to civilized man. In the preceding pages we have 

 shown that the highest development of civilized man 

 appeared in the temperate zone, where the conditions were 

 most favorable to the highest development of the brain, 



248 



