404 
Echinus microtuberculatus, 80. 
Economy of the organism, 191. 
Ehrlich; immunised mice, 234. 
Elasticity of the organism, 93- 
96, 98, 218. 
Electric current, 180; compared 
with nervous, 291; oscillating, 
341 ff, 346, 372. 
Electro-chemical generator, 291 
Element; generic potential, 291; 
mnemonic, 319, 326, 353; spe- 
cific potential, 77, 79, 80, 92, 98, 
IOI, 102, 290, 296, 299, 300, 
+343, 349, deposition of so- 
matic, 84; of germinal, 103; 
vital, 343, 349. 
Eliminative affective tendencies, 
365. 
Eliminative hypothesis, 367. 
Emery, origin of instincts, 200. 
Emotions, defined, 389. 
Encasement of germs, 121. 
Environmental invariability, 364. 
Epigenesis, 6, 18, 104, 107. 
Errera; inheritance of alter- 
ations, 172. 
Euglena reacting to light, 364. 
Evolution (as opposed to pre- 
formation), 104, 105, I19. 
Exner, instinct of hunting dogs, 
166. 
Fasting; influence on metamor- 
phosis, 50. 
Fear, origin of, 388. 
Ferments, 270. 
Finalism, 399, 400. 
Fischer; transplantations, 
butterflies’ wings, 174. 
Flat fishes, asymmetrical, 217, 
308. 
Flechsig, Kérperfiihlsphire, 376. 
123; 
Index 
Flowers, centroepigeneses of two 
grades, in, 72. 
Fogliata; fat pads in asses’ colts, 
165. 
Formative stimulus, 20, 59. 
Friendship caused by habit, 383. 
Functional adaptation, 124, 127, 
160, 169, 174, 180, 181, 182, 184, 
194, 196, 202, 203, 207, 208, 211, 
247, 208, 276, 2906, 304, 309-311. 
Functional stimulus, 15, 94, 102, 
184, 207, 236, 266-268, 289, 290, 
302; cooperating with onto- 
genetic, 305 ff; identical with 
mnemonic, 325. 
Fundulus, 125. 
Galls, 124. 
Gall flies, 247. 
Galton, Francis; particulate in- 
heritance, 145; inheritance, 175, 
224; investigations of the in- 
heritance of instincts, 175; 
preformistic germs ‘and trans- 
fusion of blood, 281; stirp, 282; 
influence of habit, 384. 
Garten, Siegfried; intercellular 
bridges in epithelia, 33 ff. 
Gemmaria (Haackes), 229. 
Gemmes (Haackes), 2209. 
Gemmules (Darwin), 145, 281. 
Generator (see electrochemical 
generator). 
Generic element (see Element). 
Germinal elements, 86, 92, 90, 
100, 101, 311. 
Germinal energies, 
Germinal substance, 14, 17, 18, 
76, 78, 93, 103, 106, 107, 108, 
121, 144, 148, 154, 157, 201, 217, 
220, 281, 287, 288, 290, 294, 296, 
300, 301, 324, 328. 
