384 THE PHILOSOPHY OF BIOLOGY 



Intensity-factors, 6i. 

 Intensive multiplicity, 303. 

 Irreversibility, 62. 

 Irritability, 100. 

 Isothermal changes, 361. 



James, William (and academic philosophies), 80. 

 Jennings, and physiological states, 154 ; 



behaviour of Protozoa, 293 ; animal movements, 149 ; the avoiding" 



reaction, 149. 



Katabolism, 90. 



Kinases, 92. 



Kinematographic analysis, 316. 



Lamarck, hypotheses of evolution, 220. 



Lamarckian inheritance, an inadequate cause of transformism, 227. 



Lankester, acquired characters not inherited, 221. 



Laplace, and universal mathematics, 215. 



Laplacian mind, 299. 



Larval stages, 170. 



Latency (of characters), 195. 



Lavoisier, and chemistry of the organism, 127. 



Life 



and adaptation to physical conditions, 338 ; and reversibility, 339 ; a 

 direction of energies, 341 ; defined energetically, 337 ; cosmic origin of, 

 338 ; physical conditions for, 338 ; limited in power, 306 ; sparsity of, 

 on the earth, 306 ; tends to arrest dissipation of energy, 314 ; its origin 

 a pseudo-problem, 337. 



Life-substance, the primitive, 301. 



Locomotion, 258. 



Loeb and the associative memory, 155 ; 



and artificial parthenogenesis, 176; mechanism and life, 127; stereo- 

 tropism, 19 ; theory of tropisms, 144 ; tropistic movements, 146 ; 

 theories of heredity, 181. 



Limit, the mathematical, 346. 



Limits to perceptual activity, 23. 



Links, missmg, 252. 



Linnean species, 201. 



Manifoldness, intensive, 302. 



Mass, 353. 



Mass action, 140. 



Materialism., 85. 



Mathematics, evades consideration of time, 35. 



Matter, 353 ; 



inert, 375 ; notion of is an intuitive one, 352. 

 Maxwell, and sorting demons, 116, 377. 



