INDEX 
Intelligence in lower  inverte- 
brates, 63 ff, 86 ff, 182 
in mammals, 166, 167, 232 ff 
in mollusca, 187-189 
in monkeys, 260 
in reptiles, 230 
Isopods, thigmotaxis, 36 
Jackson, H. H. T., phototaxis of 
Hyalella, 50 
W., 114, contradictory 
instinets, 112 
instinct as determinant of 
action, 113 
instinct and intelligence, 168 
Jassa, change of phototaxis, 49 
Jelly-fish, reflexes, 13 
Jennings, H. S8., 34, 61, 89, 163; 
Aiptasia, food taking, 151 
Amoeba, food taking, 59, 68; 
locomotion, 66; role of 
surface tension in move- 
ments, 67-69 
anemones, habits, 153; varied 
reactions, 146, 147 
Chilomonas, chemotaxis, 27 
Didinium, capture of food, 
78 
earthworms, varied reactions 
of, 148, 149 
Euglena, phototaxis, 44, 45 
Paramececium, chemotaxis, 23- 
26; motor reflex in, 73, 74; 
thigmotaxis, 35; varia- 
tions in behavior, 76, 77 
Spirillum, chemotaxis, 27 
starfish habits, 154-155, 158— 
159, 181, 182 
Stentor, modifiability of be- 
havior, 83 
tropisms, 21 
Jesse, E., intelligence in alligator, 
230 
James, 
Keeble, F., 163, tidal rhythms in 
Convoluta, 156 
289 
Kinnaman, A. J., 279, imitation in 
Rhesus monkeys, 272 
Kirby, W. and Spence, W., 216, 
definition of instinct, 91 
intelligence of beetle, 206 
Knauer, F. K., intelligence of frogs, 
228 
Kollmann, J., 189, intelligence of 
octopus, 189 
Kreidl, A., 32, fishes coming to 
sound of bell, 224 
functions of statocysts in 
Palemon, 31, 32 
Labidocera, geotaxis, 31 
phototaxis changed by con- 
tact, 50 
Lacordaire, J. T., intelligence of 
instincts, 191 
Lady-beetles, geotaxis, 32 
Lamarck, J. B., evolution of 
instinct, 115, 118 ff 
Lamarkian theory of instinct, 115- 
131, 136-138 
Lambs, undefined instinct of young, 
96 
Landois, H., 231 
Lasius, intelligence, 212, 213 
variability of cocooning in- 
stinct, 132 
Lecaillon, A., 231 
Lee, F. §., 61 
Leibnitz, intelligence of animals, 
232 
Leucocytes, chemotaxis, 26 
Lewes, G. H., 138, origin of 
instinct, 116 
Lillie, R. 8., phototaxis of Areni- 
cola, 52, 53 
Limpets, homing, 187, 188 
Limulus, segmental reflexes, 16 
Littorina, tidal rhythms, 156, 
157 
Lizards, intelligence, 229 
Lobster, phototaxis, 55, 56 
rheotaxis, 38, 57 
