31^ 



DOMESTICATED ANIMALS AND PLANTS 



latent, loo; lost, 102 ; new, 103; 

 tend to combine in definite propor- 

 tions, 141 ; that do not blend, 144 



Cherry, origin of, 271 



Chess, 299 



Chillingham cattle, 225 



Chromosomes, 125, 127 



Cipo, 25 



Civilization, aided by slavery, 27 ; 

 requires domestication, 26 



Clothing, sources of, 4 



Clover, kinds of, 258 ; origin of, 259 ; 

 sweet, 261 



Coal, source of, 5 



Coca, 294 



Coefficient of variability, 112 



Cocklebur, 299 



Collie and coyote contrasted, 22* 



Color, causes of, 77 



Competition greatest between indi- 

 viduals of the same species, 61 



Corn, broom, 252; Indian, origin of, 

 246 ; meaning of term, 246 ; polli- 

 nation of, injured by rain, 54 



Corncob, hand-shaped, 138* 



Correlation of characters, loi 



Cotton, 296 



Cow, choice butcher, 189* ; medium 

 butcher, 191* 



Cowpea, 265 



Coyote and collie contrasted, 22* 



Creation not finished, 12 



Crossing, 187 ; in plant improvement, 

 199; may give a pure race, 148 



Curve of frequency, plotting of, 106 



Dachshund, 209 



Dane, 210* 



Darwin, "Origin of Species," 52 



Davenport, C. B., " Statistical Meth- 

 ods," 120 



Deer, albino, 102 



Degeneracy, 163 



Dehorning, 91 



Design in nature, 77 



Development, 128; arrested, 132; 

 going wrong, 130 



Deviation, average, 109 ; standard, 

 III 



Differentiation, 128 



Dingo, 208* 



Distribution, 106; sample of, 118, 

 119 



Dog, contrasted with wolf, 22*; origin 

 of, 22, 207 



Domesticated animals and plants, 

 need of improvement in, 35 



Domesticated races, come from the 

 wild, 14; variation of, 11 ; where 

 originated, 11 ; wild relatives of, 12 



Domestication, a gradual process, 16, 

 32 ; first steps of, in the hunt, 24 ; 

 in civilization, 26 ; for additional 

 food, 22 ; for clothing and shelter, 

 25; for the hunt, 21; generally 

 means improvement, 14, 35 ; his- 

 tory of, how known, 17 ; often 

 means readjustment, 91 ; result of 

 necessity, 20 ; unwelcome, 239 



Dominant characters, loi, 146; be- 

 havior of, 200 



Dorset, 227* 



Duck, origin of, 236 



Dwarfing, 131 



Environment, adds no unit charac- 

 ters, 174; and heredity, 171 ; func- 

 tion of, 173 ; mistaken estimate of, 

 171 ; modifications due to, 175 



Eskimo dog, 216 



Feeder, choice, 187*; inferior, 185* 



Feral as distinct from wild, 18 



Fertilization, 124 



Festucas, the, 255 



Fittest, survival of, 64 



Flax, 296 



Food, competition for, 54 ; sources of, 3 



Frequency curve, plotting of, 106 



Fruits, origin of, 267 



Galla ox, 222 



Galton, studies, 155 



Gas, source of, 5 



Gaur, 219, 220* 



Gayal, 220 



Giants, 132 



Goat, origin of, 231 



Goose, origin of, 236 



Grading, 187 



Grape, wild, 1 5* 



Grasses, book on, by Beal, 225; mis- 

 cellaneous, 255; origin of, 254 



Grouping, suggestions as to, 114 



Growth, 128; as determined by leaf 

 surface, 61 ; termination of, 129 



Growths, abnormal, 140 



Guinea fowl, 238 



Guinea pigs, behavior of, under 

 Mendel's law, 147-149 



