ISO 7€0 t*0 7ZO JOO SO 



700 tZO 240 JtO /AO 



Fig. 36. — The distribution of human energy on the basis of climate. 

 From "Civilization and Climate." 



190 leO 140 HO 70O 80 to 40 Za C AO 40 €0 SO tOO tXO 



Fig. 37. — The distribution of civilization. From "Civilization and Climate.*' 



