Part 23

Home Life on an Ostrich Farm, 135, 136.

Homing instinct, the, a remarkable trait, 53; an instance of its workings, 53-57, 99; nature of, 235.

Honeysuckle, a shoot of, 24, 25.

Horses, ignorant fear in, 123; self-destruction of, 146, 162; a mare and her blind companion, 226, 227.

Hyla, peeping, hibernation of, 48; a second period of peeping, 231, 232.

Indigo-bird (Cyanospiza cyanea), flight song of, 44.

Individuality, effects of solitude and gregariousness upon, 118, 119.

Industries of Animals, 137.

Inferences, right, 231-238.

Insects stilled by the cold, 49, 50.

Instinct, 1; demoralized, 73, 74; one instinct overcoming another, 74; makes up nine tenths of the lives of our wild neighbors, 74; a kind of natural reason, 76; in connection with parasitism, 79, 80; importance of, 81; origin and development of, 81, 82; not always inerrant, 155; machine-like action of, 158, 159; non-progressive, 212; nature of, 254-257; variability of, 257-261.

Jackals, 142.

Jackdaw, the Bishop of Carlisle's story of a, 148.

Jay, blue (Cyanocitta cristata), Mr. Keyser's young bird, 69, 70; hiding instinct of, 161, 251, 263.

Jay, Canada (Perisoreus canadensis), 204, 260.

Jefferies, Richard, 131, 197, 203.

Jesse, Edward, his story of some swallows, 148.

Katydids, 49.

Kea, 260, 261.

Kearton, Richard, his story of an osprey, 137; on the wren's nest, 138, 139; on a colony of terns, 139; his experiments with wooden eggs, 227, 228; on instinct in animals, 257.

Keyser, Leander S., his experiments with young birds, 69, 70.

Kingbird (Tyrannus tyrannus), 177.

Kipling, Rudyard, his Jungle Book, 14; his The White Seal, 14.

Kittens, 75.

Language, a necessity to thinking, 187, 188.

Lark. See Skylark.

Lark, prairie horned (Otocoris alpestris praticola), spreading of, 36, 37; song and song flight of, 37, 38; killed by the locomotive, 38.

Leaves, persistent and deciduous, 51.