264 



Index 



Drosophila, effect of intense 

 light on, 93, 94 



Earthworm, phototaxis in, 65, 



71-73, 75-77, 113 

 Eimer, O. E., 28, 122 

 Electrotaxis, reversal of, 107 

 Epithelial cells, behavior of, 



184-187 

 Eudendrium, effect of light on, 



90 



Euglena, orientation of, 89 

 Ewald, W. F., 90, 102 



Fabre, J. H., 38, 197, 198, 212, 



220-222 



Fasten, N., 192 



Fiddler crabs, phototaxis in, 81 

 Fishes, parental care in, 140, 



143 



recognition of sex, 230-231 

 rheotaxis in, 64, 65 

 Fiske, J., 46 



Fly larvae, phototaxis in, 74-77 

 Forel, A., 121 

 Franc6, R. H., 28 

 Frogs, sex recognition in, 231- 

 233 



Galen, 12 

 Gassendi, 17 

 Geotaxis, 61 

 Goltz, F., 231-233 

 Goodspeed, T. H., 107 

 Graber, V., 53 

 Groom, T. T., 98 

 Groos, K., 27, 30 



Haeckel, E., 28, 177 

 Hall, G. Stanley, 30 



Harper, E. H., 75, 76, 106 

 Harrison, R. G., 185, 189 

 Hegner, R. W., 188 

 Heliotropism, 52, 54, 96 

 Hobhouse, L. T., 33, 130, 134, 



135 

 Holmes, S. J., 71-76, 80, 94, 114, 



169 ff., 183, 185-187, 193, 



201-206, 209-211, 213, 215, 



222-228, 231 



Hudson, W. H., 206, 207 

 Hume, D., 120 

 Hyalella, sex recognition in, 



223-227 



Hydra, behavior of, 125, 128 

 Hypnotism in animals, 214 



Incubation, origin of, 41, 42 

 Inhibition, 131, 133-136, 139 



in tropisms, 113-116 

 Instinct, analysis of, 30, 31, 51 



origin of, 25, 26, 122, 123 

 Intelligence, beginnings of, 

 120 ff. 



critical study of, 33, 34 



Jackson, H. H. T., 105, 106 



James, W., 128 



Jennings, H. S., 70, 71, 76, 89, 



126, 127, 156, 158 

 Jensen, P., 161 



Kirby, W., 199 

 Kirkpatrick, E. A., 30 



Lamarck, J. B., 22-24, 122 

 Lamarckian factor, 28, 29, 160- 



164 



Learning, problem of, 139 ff. 

 Leech, phototaxis in, 71, 73, 82 



