INDEX 



161 



Fauna, 



of Kiel Bay, 138 



pond, 148 



quantitative determination in 

 brackish waters, 137 



salt water, 111 

 Fanual significance of baseleveling, 



86 

 Feeding habits, 



slugs, 125 



snails, 125 



Venus mercenaria, 114 

 Feeding reactions of rose coral, 



109 



Feeding reflexes of shell-fish, 114 

 Fertilization of flowers, 142 

 Field ants, 149 

 Field naturalist, 37 

 Field notes, 42 



numbers in, 50, 51 



recording, 42 

 Field study, 36, 37, 38 



plan, 36 



Field work, primary aim, 41 

 Fish, 



associations of a lake, 147 



associations of Illinois, 140 



distribution, 64 



ecological succession, 133 



environment and distribution, 

 64 



environment, index to, 118 



feeding grounds, affected by vege- 

 tation, 90 



food, 76, 123 



food relations of fresh-water, 123 



habitats of Illinois, 140 



habits, 63, 112 



Illinois, 140 



lateral-line organs of, functions, 

 116 



life histories, 112 



marine vegetation, 89 



metabolism, 100 



methods of study, 39 



of a small stream, 147 



organ of sense, 113 



organ of taste, 113 



physiological responses of, 112 



pond, 133 



productivity in standing and run- 

 ning water, 101 



reaction to atmospheric gases 

 in water, 118 



reaction to carbonic acid, 118 



reaction to oxygen, 118 



rheotropism in, 115 



sense of hearing, 116 



spawning habits of, 112 



stream, 133 



submerged vegetation affecting 



feeding ground, 90 

 Fitness of environment, 85 

 Floods of lower Danube affecting 



biological conditions, 145 

 Florida mangroves forming ani- 

 mal habitats, 89 

 Flowers, 



and insects, 142, 143 



animal visitors, 141, 142 



bees and, 141 



fertilization, 142 



pollination of, in relation to ani- 

 mals, 141, 142 

 Food, 



beetles, 126 



birds, 126, 128, 130 



butterflies, 77 



Coleoptera, 77 



Echinoderms, 126 



fish, 123 



insects, 128 



lizards, 129 



nestling birds, 128 



oysters, 112 



predaceous beetles, 130 



serpents, 129 



snails, 125 



Turbellarian, 127 



woodpeckers, 126 

 Food habits, 



back beetles, 76 



Cerambycidse, 72 



Chrysomelidse, 72 



Coleoptera, 77 



grosbeaks, 128 



larval Acalyptrate Muscidse, 78 



longicorn beetles, 77 



Rhynchophora, 72 



snout beetles, 76 



