o^^ 



INDEX 



.^■0 



hake, 95 



half-somersault during development, 



hand, the human, x'^, -2.6, xy, 1x5, ^31 



hawks, 118, 145 



hearing of bats, 82. 



hearing of birds, 80, 82. 



heliozoans, zyi 



hemipterous insects, 158 



hen, gray brahma, 145 



hermit-crabs, 79 



Hesperioidea, 2.02. 



heteropods, 103 



hirudinid worms, 103 



hoarding habit, 14, 15 



holothurians, loi, 12.1, 150, 153, 2.01, 



2.63 

 hook-worms, ^65 

 horned larks, 49 

 hornets, 35 

 horses, 170, 171, ijx, 173, 174, 176, 



177, 180, 184, Z04, 105, io6, ^2.8 

 horses, naked or hairless, 146, 119 

 horse-shoe crab, 109 

 hoxinds, 4, 184, 186 

 house-flies, 45 

 human attributes, 6, 7, 16, 17, 18, 12.4, 



Z30, X3I 

 human attributes in birds, 7, 17 

 human attributes in insects, 7, 16 

 human attributes in other mammals, 



7, 17 

 human attributes in rodents, 7, 15 

 human children, X5, 2.6, 2.7 

 human culture, origin of, ^31 

 human family, 6, zo, Z7, Z3Z 

 human hand, Z5, z6, Z7, ZZ5, Z31 

 human social system, zz, z8 

 human society, zz, z8 

 hyjenas, 184 



hydras, 194, Z39, Z65 

 hydroids, 66, Z35, Z39, Z65 

 hymenopterous insects, zz, 158 



I 



Tee Age or Pleistocene, i, iz6, 170, 171, 

 17Z, 176, 177, ZZ7, zz8, ZZ9 (see table 

 on p. 99) 



ichthyosaurus, 181 



indigo bird, 13 



infusorians, z66 



insect-cattle, 9 



insect societies, 8, 9, zo, zz 



insectivores, 14 



insects, 7, 8, 9, 10, 11, 15, 16, 17, 18, 

 zo, zz, Z4, 41, 45, 46, 48, 51, 59, 61, 

 63, 65, 68, 69, 79, 85, 86, loz, 117, 

 118, 119, izo, 156, 15S, 159, 167, 

 183, zoz, Z17, Z18, ZZI, ZZ3, Z3Z, Z33, 

 z6z 



insects, chemical senses of, 85 



insects, cocoon of, 8, 16 



irreversibility of specialization, Z04, 

 Z05 



J 



Jagana, 145 



Japanese giant spider-crab, 108 



Japanese pugs, 147 



jassids, 9 



Java ape-man, zz6 



jays, 13 



jellyfish, 65, 75, 94, 98, 153, Z35, Z39, 



Z51, Z64, Z65, Z7Z 

 jointed worms, 6^, loi, izo, izi, 150, 



155, 190, Z06, Z47, Z55, Z56, z6z 

 June-bugs, 45,46 

 Jurassic, i, 94, 178 (see table on p. 99) 



[190] 



