INDEX 



Acquired character 82 



Activity 23 



Age of parents x., 30, 45, 54, 66, 72, 11 



Amoeba 87 



Anthrax 28, 91 



Ape 70, 72 



Bacteria 27, 95 



Binet system 22 



Birth control 29, 40, 48 



Blood reaction 26, 91 



Brain power vii. 



Brothers 75, 77 



Calmette 20 



Chicago 49 



aimate 20, 61, 63, 66 



Cows 17, 26 



Customs 57, 60, 74 



Cuttings 20 



Darwin vi., 13 



Development by exercise 15, 17, 21, 80 



Diagram 48 



Disease 82, 94 



Education 33, 82 



Endogamy 57 



Energy 15, 78, 84, 94 



Eugenics < . . .viii., 68, 71 



Evolution ix., 55, 71, li 



Exercise ix., IS, 21, 27, 63, 87 



Exhaustion 86, 94 



Exogamy — S7, 74 



105 



