362 



INDEX 



Heat, reaction to, in Amceba, 10; in bac- 



' teria, 37; in Paramecium, 51-53, 70, 305; 

 in other infusoria, 124, 305; in Hydra, 

 204; in rotifers, 242; in flatworms, 244; 

 interference witli other reactions, 150; 

 interference of other reactions with reac- 

 tion to heat, 93. 



Hermit crabs, temporary reaction to gravity, 

 211; seeldng shells, 250; formation of 

 association and habit, 257, 290. 



Hertel, reactions to ultra-violet light, in 

 Paramecium, 72; in other infusoria, 142; 

 in Hydra, 213. 



Heteroraorphic tentacles, behavior, 227. 



Hobhouse, reflex, 278; selection from varied 

 movements, 327. 



Hodge and Aikins, changes in behavior in 

 Vorticella, 179; duration of modifica- 

 tion, 254; continuous activity of Vorti- 

 cella, 181. 



Holmes, trial movements in lower animals, 

 247-250; random movements, 251, 254; 

 form regulation, 348. 



Holt and Lee, tropism theory in reactions to 

 light, 266, 269. 



Hunger, infusoria, loi; Hydra, 189, 205, 219; 

 sea anemones, 191, 224; Planaria, 253; in- 

 vertebrates in general, 252; general, 295, 



331- 



Hunter ciliates, 184. 



Hydra, nervous system, 189; rhythmic ac- 

 tivity, 189, 285; locomotion, 190; posi- 

 tion,' 193; righting reaction, 193; local 

 contractions, 198, 272; locomotor reac- 

 tions, 203; reactions to electric current, 

 208; to light, 212; to chemicals, 198, 

 218; food reactions, 217; nematocyst 

 discharge, 218; hunger, 219. 



Hydroid, reaction to gravity, 210; reaction 

 of tentacles, 222. 



Hydromedusae, reactions of separated mar- 

 gin and bell, 227 (see meduscE). 



Hypotricha, reaction method, 53, 114; creep- 

 ing, 118; reaction to heat and cold, 124; 

 to electricity, 154. 



Independence of parts of body, in ccelen- 

 terates, 227; in sea urchin, 235. 



Individual selection, relation to natural selec- 

 tion, 324. 



Induction shocks, reaction to, infusoria, 81, 

 102, 104, 151; ccelenterates, 208. 



Infusoria, 41; behavior, 41-187; behavior 

 under natural conditions, 179; food 

 habits, 183; relation to tropism, 270. 



Inhibition, release of, as determining move- 

 ment, 284. 



Injury, relation of reactions to, in Amoeba, 

 23; in bacteria, ^s'l i^ Paramecium, 52, 

 63, 109 (see regulation, and interference 

 ■with processes). 



Instincts, 237. 



Intelligence, 334, 343; relation to natural 

 selection, 324, 345; to regulation, 349, 



35°- 



Interference with internal processes as cause 

 of reaction, in Amoeba, 11, 20; in bac- 

 teria, 39, 341; general, 295, 342, 346; 

 interference of stimuli, 92, 119, 150. 



Internal factors in behavior, 283. 



Invertebrates, lower, general features of be- 

 havior, 233-259. 



James, reflex, 278, 280, 281. 

 Jellyfish, see medusiE. 



Jensen, reactions to gravity in Infusoria, 76, 

 149. 



Kinesis, 275. 



Kuhne, polarizing effects of electric current, 

 167. 



Lacrymaria, reaction to induction shock, 

 151; trial movements, 181. 



Lagynus, food habits, 187. 



Le Dantec, life processes of Protozoa and 

 Metazoa, 260. 



Learning, relation of change of behavior in 

 infusoria to, 178; in crustaceans, 255. 



Leech, trial movements, 247; reaction to 

 light, 248. 



Leidy, taking food in Amoeba, 15, 19. 



Light, reaction to, Amoeba, 1 1 ; bacteria, 

 35-37, 341; Paramecium, 72; Stentor, 128; 

 Euglena, 134; other infusoria, 141; 

 swarm spores, 143; Coelenterata, 212; 

 Hydra, 212; Gonionemus, 214; Roti- 

 fera, 242; earthworm, 247; leech, 248; 

 blowfly larva, 249; in colorless organ- 

 isms, 142, 213, 333; tropism theory for 

 light reactions, 266, 268, 269. 



Literature hst, 351. 



Localization of reactions, in Amoeba, 20; 

 Paramecium, 51, 52; in other infusoria, 

 117; different methods, 307; relation to 

 tropism theory, 266, 274. 



LocaUzed reactions in ccelenterates, 198, 231; 

 in theory of tropisms, 266, 274. 



Locomotion, in Hydra, 191 ; in sea anemones, 

 191. 



Locomotor reactions in Coelenterata, 203. 



Loeb, behavior of Cerianthus, iqt, 195; 

 localization in medusae, 200; indepen- 

 dent activity of parts of body in Coelen- 

 terata, 227, 228; function of nervous 

 system in medusae, 229; chain reflexes, 

 251; function of nervous system, 263; 

 tropism theory, 266, 269. 



Loeb and Budgett, theory of reaction to elec- 

 tricity, 166. 



Loxocephalus, spontaneous collections, 122. 



Loxodes, avoiding reaction, 113. 



Loxophyllum, avoiding reaction, 113. 



Ludloff, reactions to electricity, 84, 167. 



