INDEX 



Hawk, sparrow (Falco sparveriua), 

 releasing itself, 79. 



Hawks, silent and solitary, 104; 

 feeding habits and scarcity, 146; 

 mode of carrying prey, 256. 



Hibernation, 281-288. 



Highhole, or northern flicker (Colap- 

 tea auraius luteus), ^7. 



HUls, the peace of the. 25, 26. 



Honey-bee, Nature's random meth- 

 od illustrated by, 81-84; limits 

 of her knowledge, 153, 154; the 

 drone fatherless, 237, 238. 



Homaday, William T., 114, 115, 

 144. 



Horaeta, nests of, 151, 152; winter- 

 ing, 282. 



Hospital, a military, 9. 



Humorous, perception of the, 118- 

 120. 



Huxley, Thomas Henry, 50, 54, 57, 

 237; quoted, 59, 88; a scientific 

 idealist, 69. 



Ice-sheet, continental, 79, 80. 



Ichneumon-fly, 203. 



Indigo-bird (Passerijia cyanea), 

 song of, 257; manner of singing, 

 259-261. 



Insects, making use of nature, 128; 

 intelligence of, 203, 205, 206; 

 music of, 261, 262; in winter, 281- 

 283. 



Inetinct, price paid for, 136; inher- 

 ent unconscious intelligence con- 

 stantly in operation, 140; heap- 

 ing measures of, 142; the killing 

 instinct, 152, 153 ; the key to ani- 

 mal behavior, 155-174; instinct 

 and instincts, 162; maternal in- 

 stinct, 162, 163; homing instinct, 

 162-164; not found in the lower 

 forms, 169, 170; physics of, 172; 

 times of development of instincts, 

 172, 173; as untaught wisdom, 

 201-211; and the power of choice, 

 209-211. 



James, William, quoted. 187. 



Jay, blue {CyaTwdtta criatata), habi- 

 tat, 42, 43; teasing a sharp- 

 shinned hawk, 103. . , 



Jordan, David Starr, and Vernon 

 Kellogg, their " Evolution and 

 Animal Life," 209, 210. 



Junco, or snowbird (Junco hyemalis)^ 

 with a neat in a haymow, 99-102; 

 a fidgety bird, 100; story of an- 

 other haymow nest, 231-233; ner- 

 vousness, 232, 233 ; beauty of the 

 nest, 272; two nests, 272, 273; 

 caught by a shrike, 289, 290. 



Katydid, 262. 



'KmehirdiTyrannustyrannus), 150. 

 Kingfisher, a Cape Verde Islands, 



146. 

 Knowledge, through sympathy, 12. 



Laboratory experimentation on 

 animals, vs. observation, 165- 

 168, 175-200; takes them out of 

 the animal sphere, 179-183; nar- 

 rowness of the field, 183-185; do- 

 mestic animals generally used, 

 191. 



Lankester, Ray, 133; quoted, 134, 

 135. 



Laughter, 118, 119. 



Leaves, faUing, 246-248. 



Life, the physico-chemical explana« 

 tion of, 55, 56; scientific view of, 

 58; begets life, 91, 29. 



Literature, its gain in this economic 

 age, 74, 75. 



Loeb, Jacques, his experiments, 

 168-170. 



Lowell, James Russell, quoted, 258. 



Lubbock, Sir John, 17, 205. 



McClure^a Magazine, 156 note. 



Maeterlinck, Maurice, 20. 



Man, animal origin of, 56-58; can- 

 not live by science alone, 60; Na- 

 ture's supremacy over, 85, 86; 

 evolution of, 87-90; made up of a 

 multitude of cells, 92; as msister 

 of Nature, 128; hints of his facul- 

 ties in the lower animals, 129; ori- 

 gin of his reason, 133-136; the fall 

 of, 135; the price of his privileges, 

 136, 137; many of his acts deter- 

 mined by causes outside of his 

 own will, 141; his intelligence 



295 



