INDEX 



Heart, the, 228; work of the, 



277. 

 Heat, sensation of, 300, 301. 

 Heaven, 109. 

 Hedonism, 84. 

 Heliotropism, 298. 

 Hekoholtz on the origin of life, 



339- 

 Heraclitus on life, 28. 

 Heredity, conservative and pro- 



gressi\^e, ^68; cumulative, 



369; theones of, 135, 136, 



366. 

 Hermaphrodism, 245, 246, 258, 



259- 

 Hermaphroditic glands, 249. 

 Hertwig, O., on the biogenetic 



law, 382 ; on the monera, 



Heterogenesis, 254. 



His, W., theories of, 383. 



Histolysis, 106. 



Histona, the, 36. 



Histonals, 165, 166, 171, 182. 



Historical waves, 389. 



History, 461; nature of, 9; 

 sources of, 9. 



Hofmeister on organic chemis- 

 try, 45- 



Holosphaera, 173. 



Honor, false sense of, 430. 



Huxley on organic individual- 

 ity, 152. 



Hyaloplasm, 130, 143. 



Hybrids, 255, 256; fertility of, 



ass- 

 Hydrostatic movements, 270. 

 Hygiene, 401, 464. 

 Hylonism, 82. 

 Hylozoism, 81, 86, 451. 

 Hypogenesis, 255. 

 Hypotheses, nature of, 54; 



necessity for, 86, 87, 89, 



378, 439- 



Idealism, theoretical and prac- 

 tical, 84, 92. 



Idiocy, 20. 



Idioplasm theory, the, 136, 137, 

 366, 367. 



Ileum, the, 226. 

 Imagination, function of the, 



87. 

 Imbibition energy of plasm, 



39- 

 Imbibition m orgamsms, 261. 

 Immaterial world, the, 436, 



437- 

 Immortality, the belief in, 64, 



6s, 71, 108; of the uni- 



cellulars, 99-101. 

 Incurables and suicide, 118, 



119. 

 Individuality, organic, 149, 152. 

 Infusoria, movement in the, 



268, 269, 272. 

 Inoculation, 204. 

 Insanity, increase of, 114, 118, 



119. 

 Insectivorous plants, 304, 305. 

 Instinct, 418. 

 Intelligence, 316, 317. 

 Intercellular matter, 145. 

 Intussusception, 42. 

 Ionic ijhilosophers, the, 66. 

 Irritability, 287, 288, 291, 293. 

 Isopola, 174. 



Kant as natural historian, 9; 

 biological ignorance of, 11, 

 318, 319; critical views of, 

 438; contradictory views of, 

 68, 434, 444; influence of, 25; 

 mechanical views of, 435; 

 moral philosophy of, 412, 

 413; mystic training of, 443; 

 narrow life of, 443; philos- 

 ophy of, 68, 69, 74, 434- 

 440; popularity of, 444; 

 theory of knowledge of , 9, 10, 



^^69.317-319. 332. 

 Kassowitz on archigony, 355. 

 Kelvin, Lord, on the origin of 



life, 339. 

 Kidneys, the, 233. 

 Kirchhoff on the work of science, 



6. 

 Knowledge, a priori and a 



posteriori, 11, 24, 317; and 



faith compared, 54; dualistic 



479 



