INDEX 



Monobia, i6o, 196. 



Monoclinism, 247. 



Monoecia, 248. 



Monogamy, 240. 



Morality, 411, 412; a social 

 instinct, 419, 420; conven- 

 tional, 430; evolution of, 

 413, 414, 430-432; a form of 

 adaptation, 414. 



Morphology, 94, 171. 



Morphonta, 149, 152- 



Motion in metabolism, 259. 



Mtiller, Johannes, on the nat- 

 ure of life, 49; on sensation, 

 288. 



Muscles, the, 273, 276-279; 

 forms of in lower animals, 

 278; striated and non- stri- 

 ated, 277. 



Muscular cells, 277. 



Mutation theory, the, 365, 373- 



Myophsena, 269. 



Nageli on evolution, 365; 

 on plasm, 137; on the origin 

 of life, 343, 344, 354, 356; on 

 universality of sensation, 450. 



Natural history, 9. 



Naturalism, 86, 87. 



Necrobiosis, 106, 349. 



Neo-Darwinism, 375, 376. 



Neo-Lamarckism, 375, 376. 



Neo-vitalism, 48; sceptical and 

 dogmatic, 50. 



Neurona, 12, 13, 328. 



Nitrobacteria, 201, 215, 218. 



Nuclein, 156. 



Nucleolus, 140. 



Nucleus of the cell, 122, 139, 



Nutntion, progress in supply 

 of, 401. 



Observation, subjective and 



objective, 7. 

 Occtdtism, 74, 75. 

 CEcologr, 78, 95- 

 Oken, Lorentz, 79, 80. 

 Olfactory region, 303. 

 Ontogeny, 94, 361, 376, 379. 



Optimism, log, 110. 



Organella, 35, 130, 159, 163. 

 191. 



Organic chemistry, 37; and in- 

 organic, differences Isetween, 

 27, 28, 40; meaning of, 37; 

 sensations, 302, 308. 



Organism, nature of an, 29, 30, 

 36. 



Organization, nature of, 29; 

 progress of, 338; stages of, 



149. 15°. 151- 



Organs, 159, 163; apparatus of , 

 164; systems of, 164; of 

 sense and thought, 12. 



Osmosis, 39. 



Ostwald, as a monist, 38; on 

 enzyma, 46; on growth, 44; 

 on mental energy, 330; sys- 

 tem of, 85. 



Ovary, 325. 



Ovoplasm, 245. 



Ovulum, the, 245, 247, 250. 



PEDOGENESIS, 253. 



Palavitalism, 48, 49. 



Palingenesis, 382. 



Pangenesis theory, the, 366. 



Panpsychism, 340. 



Pantheism, 82. 



Paranuclein , 141. 



Parasites, 235-238. 



Parasitology, 235. 



Paratonic movement, 262, 274. 



Parthenogenesis, 251, 252. 



Passive movements in organ- 

 isms, 262. 



Pasteur disproves spontaneous 

 generation, 350-352. 



Paulospores, 244. 



Peptones, 45. 



Perception of stimuli, 292, 293, 

 296. 



Perigenesis of the plastidules, 

 136. 



Perpetual motion of universe, 

 258. 



Persons, 36, 148, 150, 154, 166, 

 183. 



Pessimism, 109, no, in. 



31 



481 



