INDEX OF SUBJECTS 



355 



Ecology — Continued: 



organization of, 23, 25, 32, ^; physio- 

 logical, 299-308; relation to biology, 

 315-18; relation to geography, 318-20; 

 relation to sociology, 318. 



Economic problems: 9-1 1; preservation 

 of breeding, grounds of fishes, 126. 



Eel, 84. 



Egg-laying, of aquatic insects, 107, 108. 



Electricity, 161. 



Elk, 14, 201, 269. 



Elm: American, 190; coxcomb gall of, 

 192. 



England: bird protection in, 8; man- 

 made nature in, 11. 



Entomostraca, 20, 69, 70, 71, 76, 133, 152, 

 176, 179, 204; {see Cladocerans, 

 Copepods, and Ostracods); the food 

 of young fishes, 76. 



Environment: 42-56, 58-67, 157-66; 

 299; factor of, 42-44; relation to, 

 22-33. 



Equilibration: of aquatic communities, 

 diagram illustrating, 70; of land 

 communities, 166-69; diagram illus- 

 trating, 167. 



Erosion, important on clay bluffs, 209, 

 210. 



Ethology, 32. 



Evaporation: 162-65; effect upon 

 animals, 162-63; expression of con- 

 ditions, 162; of different habitats, 

 164; in forest stages, 248-49; reactions 

 to, and death by, 163. 



Evaporimeter: Piche, 164; porous cup, 

 162. 



Factors in distribution, 299. 

 Fairy shrimp, 177-79, 185, 278-79. 

 Field study: legal aspects, 56; methods, 



321-24. 

 Fish: breeding of, 126; destroyed by 

 lampreys, 219; feeding, 130; longi- 

 tudinal distribution in streams, 109, 

 no, 115, 119, 120; protection, 56, 57; 

 traps, 80. 

 Fish, scientific names: 

 — Abramis, 65: 



crysoleucas, 102, 115, 119, 120, 142, 

 143, 156. 

 — Acipenser rubicundus, 85. 

 — Ambloplites rupestris, 85, 99, 119. 

 — Ameiurus: 



lacustris, 85. 



melas, 102, 119, 120, 149, 156. 



natalis, 156. 

 nebulosus, 156. 

 — Amia calva, 156. 

 — Anguilla rostrata, 84. 

 — Aphredoderus sayanus, 120. 

 — Aplodinotus grunniens, 85. 

 — Argyrosomus: 



artedi, 82, 84. 



hoyi, 81, 82, 85. 



nigripinnis, 81, 82. 



prognathic, 79, 80, 82, 85. 

 ■ — Boleosoma nigrum, 84, 91, 95, 105, 115, 



119, 120, 135. 

 — Campostoma anomalum, 119, 120. 

 — Car pi odes, 85. 

 — Catostomus: 



catostomus, 84. 



commersonii, 84, 91, 92, 106, 115, 



119, 120. 



nigricans, 84, 119. 

 — Chaenobryttus gulosus, 142, 156. 

 — Chrosomus erythrogaster, 91, in, 115, 



119. 

 — Coregonus clupeiformis , 82, 85. 

 — Crislivomer namaycush, 79, 82, 85. 

 — Cyprinus carpio, 120. 

 — Erimyzon sucetta, 115, 119, 142, 15°- 

 — Esox: 



lucins, 85, 115, 120, 140. 



vermiculatus, 105, 115, 142, 156. 

 — Etheostoma: 



coeruleum, 95, 97, 119. 



flabellare, 95, 97, 119. 



zonale, 95, 97, 119, 120. 

 — Eucalia inconstans, 85. 

 ■ — Eupomotis gibbosus, 84, 156. 

 — Fundulus: 



diaphanus menona, 84, 123. 



dispar, 120, 132, 135. 



notatus, 119. 

 — Hadropterus aspro, 95, 97, 120. 

 — Hiodon: 



alosoides, 85. 



tergisus, 85. 

 — Hybopsis kentuckiensis, 119. 

 — Labidesthes sicculus, 85, 130, 135. 

 — Lepisosteus osseus, 85. 

 — Lepomis: 



cyanellus, 102, 119, 120, 128, 156. 



megalotis, 99, 119. 



pallidus, 84, 99, 115, 119, 120, 156. 

 — Lota maculosa, 82, 85. 

 — Microperca punctulata. 84, 119. 

 — Micropterus: 



dolomieu, 85, 99, 119, 120. 



salmoides, 85, 115, 120, 128, 156. 

 — Moxostoma: 



aureolum, 84, 115, 119, 140. 



breviceps, 120. 



