320 
Peach, and nectarine, 151; origin of, 
avi 
Peacock, 238 
Pear, origin of, 269 
Pearson, work of, 167 
Pedigree registers, 179 
Penholder, 133 
Petroleum, source of, 5 
Pig, bush, 233; origin of, 231; rela- 
tives of, 231 
Pigeons, varieties of, 93-95 
Pine, Jack, 54 
Plant breeding, records in, 202 
Plant improvement, Mendel’s law in, 
I 
Plant lice, increase of, 51 
Planting, systems of, 202 
Plants as sources of clothing, 4; as 
sources of food, 3; as sources of 
heat and light, 5; as sources of 
raw material, 8; as sources of 
shelter, 5; cultivated, origin of, 
241; domesticated, need of im- 
provement in, 35; improvement 
of, 198; medicinal properties of, 
9; ornamental, 298 
Plow, the primitive, 26 
Plun, origin of, 269 
Plumb, Types and Breeds of Farm 
Animals, 97 
Pointer, 209 
Pollen, function of, 125 
Poodle, 209 
Poppy, opium, 294 
Prairie chicken, 224 
Prime steer, 194* 
Progression, 160 
Protective coloring, 74 
Pure bred, 178 
Python, legs of, 133 
Quagga, 217 
Recessive characters, behavior of, 
101, 146, 200 
Redtop, origin of, 254 
Registry, advanced, 183 
Reversion, 163 
Rice, origin of, 250 
Room, competition for, 58 
Rye, origin of, 249 
Samples, suggestions as to taking, 
117 
Scrubs, 185 
DOMESTICATED ANIMALS AND PLANTS 
Selection, effect of, in making a“ fit,” 
85; effect of, upon the individual, 
84; effect of, upon the species, 84; 
improvement by, 198; individual 
and the race contrasted, 85; our 
standards different from those of 
nature, 88; power of, to modify 
type, 93-95 ; the individual and the 
race, 66 
Selective effect of natural conditions, 
53 : 
Setter, 209 
Sheep, breeds of, 230; domesticated, 
229*; fat-tailed, 230; origin of, 
227; relatives of, 229; wild, 228 
Shelter, sources of, 5 
Shorthorn cattle, origin of, 11 
Silk, elongated, 123* 
Sir Donald of Banff, 223* 
Sires, source of, 192 
Six Nations, 247; civilization of the, 
17; food of, 23 
Slavery, civilizing effect of, 27 
Sorghum, origin of, 251; strains of, 
251 
Soy bean, 265 
Spermatozoon, function of, 125 
Splint bones, 213 
Standard deviation, 111 
Statistical studies, advantages of, 118 
Stature, table of, 156 
Steer, baby beef, 196*; 
rough, 192*; prime, 194* 
Struggle for existence, 52 
Sugar cane, origin of, 252 
Survival of the fittest, 64; signifi- 
cance of numbers, vigor, length of 
life, 69; significance of weapons, 
71 
Swan, 238 
Sweet clover, 261 
common 
Tarpan, 211 
Thistle, Canada, 299 
Thoroughbred, 179 
Timothy, origin of, 254 
Tobacco, 295 
Toltecs, 247 
Transmission, machinery of, 122; of 
unit characters, 121; table of 
stature. 156 
Turkey, 224; 
tives of, 237 
Type modified by selection, 93 
Types, 106 
origin of, 237; rela- 
