164 



INDEX 



Humble-bee, 



domestication, 119 

 habits, 119 

 life history, 119 



Humidity of air, vegetations! con- 

 trol of relative, 90 

 Humus, effect on animal life of 



soil, 100 



Huttonian theory, 80 

 Hydr aides Dianthus V., behavior 



modifiable, 106 

 Hydropsyche, photographing nets 



of, 64 



Hymenoptera of N. America, 

 bibliography, 73 

 catalogue of species, 73 

 Hypermetamorphic beetles, 139 

 Hypotheses, multiple working, 55 



Ideas, 



biometric, 63 



life history of scientific, 57 

 Illinois, 



ecological relations of entomophi- 

 lous flora and anthomophilous 

 insect fauna, 142 



fish, 140 



sand areas, biology, 146 



sand prairies, associations! study, 

 139 



State Entomologist's reports, 



74 

 Illinois River, entomology, 74 



plankton, 147 

 Image-forming powers of eyes of 



various types, 110 

 Imitation, 



and intelligence in birds, 117 



criterion, 117 

 Index, 



Agricultural reports of the U. S. 

 patent office, 72 



circulars, U. S. Entomology 

 Bureau, 73 



Experiment Station Record, 76 



Illinois State entomologist's re- 

 ports, 74 



Insect Life, 72 



Lintner's New York State en- 

 tomologist's reports, 74 



Missouri reports on insects, 77 

 Ontario entomological society 



reports, 72 

 Orthoptera of North America, 



77 

 papers on biological survey of 



U. S., 128 

 Riley's Missouri entomological 



reports, 77 

 Index catalogue of medical and 



veterinary zoology, 129 

 Indian corn, see Corn 

 Indiana, 



caves and their fauna, 144 

 insect galls, 143 

 Individual development, 97 

 Individual ecology, 3, 8, 23, 24 



and the associational unit, 131 

 Influence, 



of sessile habit, 100 

 of slowest factors, 98 

 Inland habitats, 91 

 Insect associations, changes in, 



127 



Insect depredations in forests, 127 

 Insect enemies of cotton boll weevil, 



125 

 Insect fauna of the giant cactus of 



Arizona, 135 

 Insect galls, 

 Europe, 143 

 Indiana, 143 

 New York, 143 



Insect guests of Florida land tor- 

 toise, 135 

 Insect Life, 111 



index, 72 

 Insect oscillations regulated by 



birds, 123 



Insectivorous Coleoptera, 127 

 Insects, 



affecting park trees, 74 

 affecting the orange, 75 

 affecting woodland trees, 74 

 and animal forms of Caledonia 



Creek, N. Y., 147, 148 

 aquatic, 74 



aquatic in Adirondacks, 75 

 bibliography, 74, 75 

 bionomics of, 128 



