Index 



381 



Heterogonous growth, 64 



Heterospilus prosopidis, 215 



High plains grasshopper, 125, 130 



Himalaya Mountains, 19 



Hirnalopsyche, 310 



Holocarpha, 180 



Homeostatic balance, 147 



Homeotic mutants, 91 



Homologous mutations, 79 



Hormones, 34, 35 



Hornbill, 167 



Horse evolution, 94, 108 



Host isolation, 186 



Host-predator relationships, 230 



Host transfers, 186 



Hubble, 12 



Hutton, 3 



Hybridization, 83, 207, 241 



interspecific, 150, 340 



simple, 190 

 Hybridothrips, 192 

 Hybrid species, 192 

 Hydrogen, 13, 27 

 Hydrogen sulphide, 16, 45 

 Hydropsyche piatrix, 173 

 Hydropsychidae, 93 

 Hydroptilidae, 93 

 Hydrosphere, 16 



origin of, 25 

 Hypericum perforatum, 289 

 Hypothetical gene, 70 

 Hypothetical reasoning, 4 

 Hyracotherium, 65, 66 



I 



Ice, 16 



crystal arrangement of, 43 

 Ice sheet, Wisconsin, 134 

 llliamna remote, 122 

 Indirect competition, 216, 220 

 Indole, 68 



Industrial melanism, 104 

 Inheritance, chromosomal, 62 



cytoplasmic, 62, 70 



of eye color, 63 



laws of, 3 



Insect pollination, 235 

 Insecticide resistance, 101, 111 

 Insects, 44 



evolution of flight in, 151 

 Insulin, 34 



Intercontinental connections, 300 

 Intercontinental mixing, 321 



age of, 326 

 Inter-regional mixing, 309 

 Interspecific relationships, 242, 340 

 Introgression, 192 

 Isolation, age of regional, 326 



by host, 186 



degree of, 177 



ecological, 181, 207 



genetic, 196 



geographic, 157, 207, 335 



machine, 180 



sexual, 162, 169 



temporal, 183 

 Inversion, chromosomal, 75 



in Drosophila, 76 

 Iron compounds, 16 

 Island arcs, 23 

 Ivory-billed woodpecker, 239 



J 



Jupiter, 15 



Kankakee mallow, 122 



Labrador duck, 239 



Lagomorpha, 144 



Lamark, 2 



Land connections, 303, 305, 327 



Landscape aspect areas, 210, 255, 342 



Landslides, 273 



Larch sawfly, 87, 136 



Larrea-Franseria biome, 256 



Larus argentatus, 138 



Lavoisier, 2 



