incoming white man on, 84;
insect life controlled by, 87;
man's ruthless destruction of,
86; migratory, government
control of, 95; predacious, 80;
in U. S., 85; value as food, 119
Birth rate, according to degree
of wealth, 335; checked by race
crossing, 296; difference in
number of boys and girls, 313;
decrease in, 331-334; decrease
in, in America, among natives
and immigrants, 335-336; de-
crease in, in France, 334; fac-
tors affecting, direct, 340;
factors affecting, indirect, 337-
340
Boas, F., 33, 287-289, 375
Bob-white, 77
Bourbons in Spain, 260
Brain, human, 239; weight, 290
Brenner Pass, 30
Bubonic plague, 133
Buenos Aires, climatic condi-
tions, 35
California, big trees in, 44
Camel, 122
Canada, birth and death rates,
334
Cancer, 141
Candles, 104
Carbohydrates, 10
Carbolic acid, 130
Carbon, compounds, 9; impor-
tance of, to living organisms, 9
Carboniferous era, 105
Castle, W. E., 210, 221
Cat, domestic, 121
Caterpillars, 181
Cattell, J. McK., 341-342
Cattle, 122; dairy, 127
Caucasian, classified, 277
Celibacy, 338
Cell, cytoplasm, 197; definition
of, 192; discovery, 192; divi-
sion, in forming life, 194; re-
production from single, 193;
sperm, 195, 196; see also Germ
cells
Cenozoic age, 184
Central Asia, 44
Cephalic index, among Ameri-
cans, 282; among Europeans,
283; can cephalic index
change? 287-288; described,
282; social significance consid-
ered, 286, 287
Chapin, F. S., 181, 306-309
Characters, dominant and reces-
sive, 200; sex-linked, 209
Chickens, barred-rock, breeding
of, 209; color inheritance, 202,
origin, 119; varieties of, 124
Child, influence of social condi-
tions on, 331
Child-bearing, among civilized
women, 338
Children, number of, 337
Chloroform, 130
Chromosomes, as determiners of
heredity, 204; description of,
193; human, 208; number of,
in animals and in man, 194
Cinchona tree, 112
Civilization, advance of, 374;
decrease in amount of land re-
quired, 102; distinct elements,
365; material basis, 101; suc-
cess of, 394
Climate, distribution of human
energy on basis of, 40; psy-
chical effects, 41
Clodd, E., 154, 158, 168, 172,
174
Clothing, chief value of, 8, 359
Coal, 13; forms, 105
Coffee industry in Ceylon, 146
Cold storage, 116
Color, of hair and eyes, 280
Colorado beetle, 92
Coloration, protective, 182
Color-blindness, 211
Conception, prevention of, 341
Darbishire, A. D., 206
Darwin, C., 55, 171; ideas of,
177 ff., 381
Darwin, E., 167
Date palm, 61
Davenport, C. B., 181, 252
Deaf-mutism, 237
Deafness, 237
Death-rate, gradual reduction,
147; of women at childbirth,
130; statistics of various
countries, 334
De Candolle, A., 111, 113
Defects, mental, inherited, 254
Degenerate families, 266
De Vries, H., 198
Dexter, E. G., 35, 36, 37
Diphtheria, 140
Discoveries, by early man, 99
Disease, among plants, 146;
hereditary, influence
ciety, 340; losses in live stock
from, in U. S., 144; preven-
tion of, 131
Diseases, zymotic, 129
Diseases and accidents, influence
Eugenics, negative, 267, 268;
positive, 269
Europe, central, agricultural
lands, 103; heredity in royal
families of, 258
European starling, 90
Evening primrose, 198
Evolution, 177; evidence from
life of individual, 185; his-
torical evidence of, 181; phys-
ical, Drummond's idea, 343;
theological opposition to, 172
Eye, human, color of, 212, 280
Farabee, W. C., 235
Feeble-minded, 243
Feeble-mindedness, 248–252
Fertilization, 197; of flowers, by
insects, 60
Finot, J., 286, 287, 289
Fire salamander, 223
Fish, 183; blind, in Mammoth
Cave, 26; effects of tempera-
ture on, 23; stratification, in
Lake Michigan, 26
Fisher, A. K., 80-81
Fitness of environment, 5
Flies, fruit, sex-linked charac-
ters in, 209
Food, 359; three great classes,
10
"Four o'clock," experiments on,
201
Fourteenth Amendment, 366
Fowlers, the, 255
France, birth and death rates,
333
Fraser, W. J., 127
Galton, Francis, 228, 229, 266,
271, 337
Genius, common or rare? 270;
inheritance of, 258; and in-
sanity, 263
Geographic conditions, influence
of, on economic and social de-
velopment, 31
Germ cells, 193; division, 195;
human, 266
Germany, birth and death rates,
333
Giddings, F. H., 306-309, 369
Gilbert Islands, density of popu-
lation, 31
Glacial epochs, 43
Glands, ductless, 6; pituitary, 6;
suprarenals, 6; thyroid, 6
Goddard, H. H., 245-249, 251
Gonorrhea, 340
Gorgas, W. C., 137, 138
Gould, B. A., 297-298
Grasshoppers, 93
Great Britain, population per
square mile, 29
Guinea-pigs, color inheritance,
201, 204; experiments on, 220
Gulf Stream, 17
Guyer, M. F., 194, 211, 236, 253
Hair, color of, 212, 280
Hall of Fame, N. Y. C., 261
Hands, abnormal, (brachydacty-
lic, polydactylic, syndactylic),
Hann, J., 14, 16, 18, 19, 20, 36
Hastings, W. W., 316-317
Hellpach, W., 38
Hemophilia, 211, 237, 238
Henderson, L. J., 10
Hendrick, B. J., 134
Herbert, S., 229
Heredity, in royal families of
Europe, 258, 260; meaning of
word, 230
Herter, C. A., 56
Hessian fly, 92
Hibernating animals, 47
Hill, J. A., 336
Hoffman, F. L., 298
Holland, birth and death rates,
333
Hollingworth, Mrs. L. S., 325-
326
Hormones, rôle in body growth,
Hornaday, W. T., 77, 85, 90, 91
Horse, 123
Hothouses, 116
Hunt, S. B., 297
Huntington, E., 36, 39, 41, 44,
45, 49
Huntington's chorea, 239
Hypotrichosis, 238
Ichthyosis, 211
Ihering, R. von, 388
Imbecile, 243
Immigrants, influence of new en-
vironment on, 33
Immigration, effect of, on birth
rate, 339
Importation of plants and ani-
mals, 89
Indians, Aymara, 32; Quichua,
32
Industry, modern, effects on so-
ciety and population, 347, 350
Infancy, increased length, 337;
period, in man as compared to
animals, 357
Inheritance, blended, 207; neu-
rotic, 252; sex-limited, 210;
statistical laws, 228
Insanity, causes of, 252; forms
of, 253; and genius, 263,
Insect pests, aphis, 74; boll
weevil, 73; codling moth, 74;
corn-root worm, 74; damage
done to U. S. crops in 1904, 72;
gypsy moth, 89; Hessian fly,
74; San José scale, 89
Insects, abundance of, in wet
seasons, 22; attacking domes-
tic animals in U. S., 144; serv-
ices in plant fertilization, 60;
social life of, 62; value to man,
124
Institutions, crystallization of,
391; organized to meet human
needs, 362
Interrelations, between highest
and lowest forms of life, 38
Intestines, flora of, 56
Inventions, great changes pro-
duced by modern, 367; influ-
ence on man, 101; of primitive
man, 98; physical and social
effects, 369; suggested by ani-
mals, 100
Iowa, birds in, 78
Iron, 107
Italian, change of head form,
288
Java, density of population, 31
Jew, change of head form, 288
Johnston, Sir H. H., 277-278,
292, 299
Kallikak Family, 245, 266
Kammerer, P., 223–224
Keen, W. W., 131, 140
Keller, A. G., 379, 380
Keller, C., 120, 121
Kellogg, V. L., 177, 179
Kirkland, A. H., 83
Koch, R., 128
Kropotkin, 65-69
Kuczynski, R., 335
Lake Michigan, forms of life in,
57; temperature, 16
Lamarck, 168; 66 use and disuse "
theory, 217
Lapouge, G. V., 296-297
Lawton, L., 300-301
Lehr's Genealogy, 271
Leroy-Beaulieu, 335
Life, dangerous types of, 84;
distribution of, 6; relation of,
to matter, 5; stratification of,
in ocean and lake, 26
Light, its control of growth, 14;
in bodies of water, 26
Lighting, by candle, 104; by
coal-gas, 104; by electric light,
104; by kerosene, 104
Linnæus, 164, 165, 303
Lipman, J. G., 54
London, 17
Longevity, heredity of, 254
Lydston, G. F., 265
Malaria, 21, 129
Malnutrition, 250
Mammals, 183
Man, early inventions, 98; early
life and conditions, 353; four
characteristics, which give him
supreme place, 184; his de-
struction of plant and animal
life, 92; his progress, as in-
fluenced by environment, 274;
influenced by physical world,
28; inherited characteristics,
211; part of animal kingdom,
177; primitive, 98, 372; time
on earth, 189; types of culture,
100
Marlatt, C. L., 75
Marriage, necessity for care in
selection in, 269; prohibition,
to stop reproduction of unfit,
267
Marriage rate, in England and
Wales, 332
Marsh Island, 95
Martha's Vineyard, 238
Mason, O. T., 99
Matches, invention of, 98
Maturity of Indian boy as com-
pared to that of American, 357
Mayo, E., 133, 138
McClung, C. E., 208
Mendel, G., 199, 200, 202
Mendelian phenomena, 200 ff; in
men, 211, 234
Merriam, C. H., 24
Metabolism, 10
Metals, discovery of, 106
Moore, E. C., 181
Morgan, T. H., 197, 313
Mongolian, classified, 277
Mongoose, 91
Morality, different standards,
356
Morons, 244, 251
Moth, brown-tailed, 90; gypsy,
89
Multiple sclerosis, 211
Musical ability in families, 256
Muskrats, 92
Mutation, 198, 213
Mutual aid, 65
Nature, man's control of, 97
Neanderthal type of skull, 188
Negro, 34; adaptation to tropics,
Near-sightedness, 211
291; classified, 277; racial
purity, 278
Negro slaves in South, 31
Neurotic inheritance, 252
New England States, occupation
in, 31
New Zealand, birth and death
rates in, 333
Night-blindness, 211
Nitrogen, importance of, in soils,
Normal-minded man, 241
Novicow, J., 295
Nuts, value of, 114
Occupations, of men, 31
Offspring, and training of par-
ents, 218
O'Malley, A., 337
Mice, damage done to crops by, Organisms, as machines, 6
Osborn, 22, 152, 164, 166, 169,
Oxygen, discovery of, 2; sources,
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