Index 



503 



Eeactions, see Amoeba, Bacteria, 

 Compass plant, Crustacea, 

 Daphnia, Diaptomus, Dros- 

 era, Flagellates, Fundulus, 

 Geotropism, Heliotropism, 

 Insects, Mimosa, Paramce- 

 cium, Pigeon, Plants, Por- 

 thesia, Rheotropism, Sten- 

 tor, Tropism, Unicellular 



Realms, see Zoogeographie 



Eecapitulation, 105 



Eecessiveness, 258 



Eecognition marks, 342 



Eed cedar, distribution, 176 



Eed Cross, work, 476 



Red-eyed Vireo, migration, spread, 

 182 



Eed fox, distribution, 174 



Eeducing division, 205-6, 215, 216 



Eedwood, see Sequoia 



Eeed, J. A., Senator, quoted, 422 

 W., Dr., 451 

 quoted, 452 

 ill. 451 



Eeese, 88; quoted, 466 



Eefractive index, see Blood serum 



Eegeneration, 192-4, 480 



Eeighard, 348 



Eeju venation, see Protozoa, con- 

 jugation 



Eeligion, see Science 



Eepair, living matter, see Metab- 

 olism 



Eeproduction, asexual, 98 



characteristic of life, 282, 325, 



327 



non-life, 282, 327 

 sexual, 98 



see Algae, Ferns, Flowers, Liver- 

 worts, Mosses, Paramcecium, 

 Protophyta, Protozoa 



Eeptiles, extinct, 125 et seq. 

 extinction, 127, 136 

 spread, 154 

 see Sex cells, origin 



"Research Methods in Ecology," 

 158 



Eesemblance, see Aggressive, Al- 

 luring 



Eeservations, see Game 



Eesponses of life, of non-life, 282 



Eesting bodies, animals, plants, 

 382 



Eesting, see Sex cycle, daphnids 



Eeversion, see Inheritance, kinds 



Ehamphorhynchus, 130; ill. 129 



Ehea, distribution, 139 



Rheotropism, roots, 308 



Ehumbler, 88 



Ehyncocephalia, invariability, 121. 

 ill. 121 



see Tuatara 

 Eibot, quoted, 257 

 Ribs, see Abdominal Vertebrate, 



head 

 Rice, polished, see Beriberi 



rat, distribution, 178 

 Richardson, 31, 37 

 Riddle, 232 

 Ridgway, 44 



Ring-necked pheasant, 411 

 Ritter, 88, quoted, 72-3 

 Rockefeller, Foundation, 466 



Hookworm Commission, 467 



Institute for Medical Research, 

 73, 86, 448 



see Hookworm control 

 Rock thrush, see Sexual selection 

 Rocky 'Mountain goat, distribution, 



174 

 Rodents, damage, 393 et seq. 



destruction, 400, 402 

 Rose-breasted grosbeak, color, 343 

 Rotifer, 105, 381; eggs, 382 



see Sex cycle 

 Rotation of crops, see Nitrogen 



fixation 

 Ruppia, see Ditch-grass 



S 



Saber-toothed tiger, see Smilodon 

 Sahara, barrier, 254 

 Salamander, light influence, 227 



see Amblystoma, Intercrossing 

 Salmon, canning, data, 428-9 



catching, 427-8 



fecundity, 427, 430 



life history, 426-7 



migration, 156, 360-1 



propagation, 429-31 



spawning, 427 



see Sexual selection 

 Salton Sea, 76-7 

 Salvarsan 447 



Salvia, ill. 331; see Insects, rela- 

 tion to flowers 

 Sambon, 450 



Sand hopper, see Orchestia 

 San Francisco, Mountains, life 



zones, 163 et seq. 



profile, 163 



see Plague 

 Sargasso Sea, 353 

 Sargassum weed, 353 



