Index 107 



Mulattos viii. 



New England 46 



Normal pedigrees 47, 49 



Origin of Species ., vi. 



Overload 86, 91 



Pasteur 28, 91 



Plants 20, 23, 25 



Poisons 20 



Protoplasm 27, 87 



Races vi., vii., 59, 72, 74, 96 



Resistance viii., 95, 98, 104 



Seeds 21, 24, 25 



Selection vii., 21, 24, 55 



Selective death rate 98 



Sexual reproduction 89 



Smallpox 25, 97, 99 



Snake venom 20 



Speed 16 



Spontaneous generation xi. 



Stentors 88 



Sunflower 21 



Tables 16, 18, 19, 47, 49, 54, 77 



Training 14, 17, 67, 85 



Tribes 56, 67 



Trotters 16, 64, 80 



Vaccination 27, 97 



Variations 13, 14, 73 



Vigor 90 



Vitality viii., 15 



War 56, 62, 66, 68 



Youngest son 30, 32 



