232 



THE NEXT GENERATION 



Chicks, study of, by Dr. Minot, 1 10, 

 ill; comparison of, with rabbits, 

 114; influence of alcohol upon, 

 118, 119 



Children, description of overworked, 

 189-195; effect of overworked, 

 on community, 195; protection 

 of, before birth, 202-204 



Civilization, modern and ancient 

 contrasted, 156 



Claxton, Mr., 192 



Cleanliness, modern movement to- 

 ward, 197 



Coal mine, boys at work in, 192 



Codfish, illustrating prodigality of 

 nature, 57 ; in illustration of the 

 five-linked chain, 63 



Columbus, 47 



Commissions for the blind, work 

 of, 176, 177 



Conversion, age of, 127 



Corn, fields of, compared, 27, 28 



Correns, 25 



Cotton mills, work of children in, 189 



Crab, 68 



Cretins (kre'tlnz), description of, by 

 Dr. Jordan, 181, 182 



Cuba, yellow fever in, 60 



Dandelion seeds, 56, 57 

 Daniels, Secretary, 151 

 Darwin, Charles, 42, 43, 47, 48, 49, 



S 1 ' 5 2 > S3- 55. 62. 63. 65, 67 

 Demm, Dr., 122 

 Depew, Senator, 143 

 De Vries, Professor, 25 

 Dock, Miss Lavinia, 168 

 Dogfish showing gill-slits, 64 

 Dominant defined, 15 

 Drinking cup, public, why discarded, 



169-170 



Edwards, Jonathan, 2, 3 



Eggs, of fish, 105-107 ; of birds, 107 ; 

 importance of, 108, 109; subjected 

 to alcoholic fumes, 118, 119 



Ellis, Dr., 134, 185, 199 



Elm tree seeds, 56, 57 



Embryo, definition of, 65 ; gill-slits 

 in, 65 ; resemblances of different 

 ones in early stages, 112; develop- 

 ment of, 113 



Environment, adaptation of potato 

 bugs to, 92-94 ; effect of, in 

 producing species, 95-99 ; for 

 children, 199 ; milk as part of, 

 200; effect of, on descendants, 

 202 



Evolution, of the horse, 34-42 ; 

 shown on hind foot of the horse, 

 37 ; evidences of, 64-70 ; crown 

 of, 153, 160 



Family, as unit of society, 161 ; po- 

 sition of, in civilization, 1 62 ; health 

 of, 162, 164 



Feeble-mindedness, 181 ; numbers 

 suffering from, 183; inheritability 

 of, 185, 188 ;. prevention of, 188 



Feet, as bound in China, 73, 74 



Fire, making of first, 1 57 



Fish, method of their multiplication, 

 105, 106 



Forel, Dr., 118, 119, 168 



Fossil bones, definition of, 34 ; reve- 

 lations made by, 40 ; in South 

 America, 45, 47. 



Frogs, eggs of, under treatment, 

 100; metamorphosis of, 102; ef- 

 fect of nicotine on, 140 



Galapagos Islands, 48, 49, 51 



Games, kissing, 165 



Gamete (gam'et), 103, 106 



Geologist, study of bones by, 39 



Germ cells, influence of environ- 

 ment on, 96, 97 ; union of, 101 ; 

 purpose of, 103, 104 ; similarities 

 of, 104; life conditions of, 107, 

 108; multiplication of, in, 112; 

 damaged by alcohol, 1 18-125 



Germ plasm, significance of, 105 



Gill-slits shown in dogfish, 64 



Goddard, Dr. H. H., 186 



Goiter (goi'ter), 181, 182 



Goldmark, Miss, 194 



Gonococcus (gon o k5k'us), 174 



Gordon, Dr., 121 



Guinea pigs, why used, 1 2 ; color 

 of, 13 ; length of hair, 14 ; albino 

 defined, 14; color inheritance in, 

 15, 16; combined inheritance in, 

 17, 18; effect of alcohol upon, 

 119-121 



