50% 



2 50° 



60% 

 ■ I' ■ 



70% 



90% 



T 1 1 3 



White - Non-contagious. 

 United States (1912-1915) 921,000 deaths 



5 







-5 



15 10 

 Deaths in Relation to Temperature 

 and Humidity. 



Figure 18. Climograph of the White Race in the Eastern United States 



