INDEX 



Heliconiits cue rate, PI. 77. 



Heloderma liorriduin, /'/. 72. 



Hemiptera, warning color and shape, 131, 

 PI. 6g. 



" Herhall, The" (Gerarde), 5. 



Hercules beetle, 51, /'/. 30. 



Heredity, 3, 10, 18; inheritance of parental 

 modifications, 67, 68, 175. 



" Heredity and Kindred Biological Prob- 

 lems, Essays upon" (Weismann), 189, 

 191. 



" Heredity and Utility" (Romanes), 189. 



Ilerrick, F. H., PI. 41. 



Hesperida, 128. 



Hesperornis regalis, 109, PI. jj. 



Hestia, 127. 



Heterocampa biitndala, PI. j6. 



Heterocampa piih'ercii, PL 55. 



/lippisfiis titberculdtus, PL 83. 



Hippocampus mohnikei, 124. 



Hippodamia convergens, PL bg. 



Hog, embryos, PL jS. 



Homarns americanus, PL 39, PL 41. 



Homer, 176. 



Honiinida, 164. 



Homology, 92, 93, 101. 



Homoptern, mimicking ants, 137, PL 75 ; 

 gihisa, PL 57. 



Honey-bee, 22, 23. 



Honeysucker, imitated by oriole, 144, PL So. 



Hornet, 130, 135, /'/. 74. 



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

 tween hair and hoofs, 36; evolution of 

 feet and teeth, 109, /'/. 46, PL 47 ; grad- 

 ual change in horse family, 40; nictitat- 

 ing membrane, PL 36; segregation in 

 Paraguay, 65. 



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



Human evolution, 163-183; how controlled, 

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

 173, 175, 178, 179-183. 



Humming-bird, nest, PL j/ / sexual 

 coloration, 150, /Y. 26. 



IIuxley.T. II., 100, 190, PI. 40, PL 91, PI. 92. 



I lydra, 101. 



Jfyla 7'ct'sicfilor, PL 66. 



/fynit'iioptera, mimicked by other insects 

 and spiders, 135, 136, /J7, 138 ; peculiar 

 form, 131; protected by stings, 130, 136; 

 warning color, 130, PL 73, PL 74. 



I [ymenopus bicornis, 128. 



Ichlhyornis victor, 109, PL 43. 

 Ichthyura inclusa, var. inrersa, PL jj. 



Id us /nitratns, PL 28. 



Immortality, 179. 



Improvement of human race, 173. 



In-breeding, 42. 



Indians, North American, measles, 171. 



Indigo-bird, sexual coloration, 150. 



Individual sacrificed for welfare of species, 



20, I8 7 . 



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, iSS. 



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 ct seq. : 

 and plant fertilization, 154 et seq.; pro- 

 tective color, 1 20. 



Instinct, 39. 



Internal factors in evolution, 1 88. 



Invalidism, 170, 172, iSl. 



Inventive genius, 176. 



"Ireland, Relations concerning" (Giral- 

 dus), 3. 



Island faunas and floras, 112. 



"Island Life" (Wallace), 189. 



Isolation, see Segregation. 



" Isolation and Physiological Selection " 

 (Romanes), 189. 



Jack-rabbit, confusing coloration, 148. 



Jaguar aggressive coloration, 127, PL 6S. 



Jamaica A T eri/ina, 10. 



Java spider which resembles bird excre- 

 ment, 127. 



Jellyfish, mouth, 101; transparency, 117. 



Jenner, 171. 



Jesus, influence upon evolution, 179. 



fob, 176. 



Jordan, D. S., 62, 95, 124, 190, 191, PL 48, 

 PL 58. 



Jinifiis bufonius, seedpods imitated by a 

 spider, 124, PL 64. 



Jungle-fowl, 29, 119, PL ib. 



Juno nia, PI. 83. 



