206 



INDEX 



Habrocestum howardii, PL 28; splendens, 

 PI. 85. 



Haeckel, Ernst, 102, PL 21, PL 38, PI. 98. 



Hair, change of function, 38; of man and 

 ape, 94, 164, PL 37, PL 93. 



"Handbook of Birds of Eastern North 

 America" (Chapman), 49. 



Haswell, W. A., PL 44. 



Hawaiian Islands, segregation in land 

 snails, 63. 



Hawk moth, elephant, 139, 140, PL 78. 



Hayes, PL 4. 



Heart, change of function, 38. 



Hebomoia glaucippe, PL 83. 



Helianthemum marijolium, 152. 



Heliconidae, 132, PL 77. 



Heliconius eucrate, PL 77. 



Heloderma horridum, PL 72. 



Hemiptera, warning color and shape, 131, 

 PL 69. 



"Herball, The" (Gerarde), 5. 



Hercules beetle, 51, PL 30. 



Heredity, 3, 10, 18; inheritance of paren- 

 tal modifications, 67, 68, 175. 



"Heredity and Kindred Biological Prob- 

 lems, Essays upon" (Weismann), 197, 

 199. 



"Heredity and Utility" (Romanes), 197. 



Herrick, F. H., PL 41. 



Hesperid(p t 128. 



Hesperornis regalis, 109, PL 45, 



Hestia, 127. 



Heterocampa biundata, PL $6. 



Heterocampa pulverea, PL 55. 



Hippiscus tuber culatus, PL 83. 



Hippocampus mohnikei, 124. 



Hippodamia convergens, PL 69. 



"History of Human Marriage, The" (Wes- 

 termarck), 198. 



Hog, embryos, PL 38. 



Homarus americanus, PL 39, PL 41. 



Homer, 176. 



Hominidce, 164. 



Homology, 92, 93, 101. 



Homoptera, mimicking ants, 137, PL 75; 

 edusa, PL 54. 



Honey-bee, 22, 23. 



Honeysucker, imitated by oriole, 144, PL 

 80. 



Hornet, 130, 135, PL 74. 



Horse, breeds of, 28, PL 4; correlation be- 

 tween hair and hoofs, 36; evolution of 

 feet and teeth, 109, PL 46, PL 47; 

 gradual change in horse family, 40, 189, 



191, nictitating membrane, PL 36; seg- 

 regation in Paraguay, 65. 



"Horse, Points of the" (Hayes), PL 4. 



Human evolution, 163-183; how controlled, 

 179, 183; sexual selection, 168, 169, 172, 



!73 I 75> T 7 8 > !79- l8 3- 



Humming-bird, nest, PL 51 ; sexual 

 coloration, 150, PL 26. 



Huxley, T. H., 100, 198, PL 40, PL 91, PL 92. 



Hydra, 101. 



Hyla versicolor, PL 66. 



Hymcnoptera, mimicked by other insects 

 and spiders, 135, 136, 737, 138; pecul- 

 iar form, 131; protected by stings, 130, 

 136; warning color, 130, PL 73, PL 74. 



Hymenopus bicornis, 128. 



Ichthyornis victor, 109, PL 45. 



Ichthyura inclusa, var. inversa, PL 55. 



Icius mitratus, PL 28. 



Immortality, 179. 



Improvement of human race, 173. 



In -breed ing, 42. 



Indians, North American, measles, 171. 



Indigo-bird, sexual coloration, 150. 



Individual sacrificed for welfare of species, 

 20, 187. 



Infant, human foot position, 166, PL 100; 

 spinal curve, 166, PL 99; strength of 

 grip, 1 66, PL 100. 



Infertility, domestic races not infertile 

 when crossed, 31; of crosses between 

 species, 31; of hybrids, 31; starting- 

 point in evolution, 32. 



Inherent tendency, in variation, 40; in 

 evolution, 188. 



Inheritance of parental modifications, 

 Intro, xi, 67, 175. 



Injury effects of inherited among uni- 

 cellular organisms, 69. 



Innate adaptation vs. acquired adaptation, 

 27; character vs. training, 127 et seq. 



Ino pruni and statices, PL 70. 



Insects, and color of flowers, 151 et seq.; 

 and plant fertilization, 154 et seq.; 

 protective color, 120. 



Instinct, 39. 



Internal factors in evolution, 188. 



Invalidism, 170, 172, 181. 



Inventive genius, 176. 



"Ireland, Relations concerning" (Giral- 

 dus), 3. 



Island faunas and floras, 112. 



"Island Life" (Wallace), 197. 



