INDEX 



Kant, Immanuel, Ivii, i, 34, 4. 

 104 ; relativity of knowledge, I. 

 69; his inconsistency, 75, 174; 

 causation, 2195 reconciliation of 

 his philosophy with that of Locke 

 and Hume, i. 106, 3. 236, 4. 

 107 ; nebular hypothesis, 2. 260 ; 

 free-will, 3. 269 n. 



Kepler, Johann, planetary motion, i, 

 157, 161, 268. 



Kirchhoif, spectrum analysis, 2. 

 32. 



Knowing is classifying, i, 15, 39. 



Knowledge, relativity of, i. 3-30, 

 3 7 ; element of discrimination in, 

 17, 39-46 ; different orders of, 

 38 5 science and ordinary know- 

 ledge, 39, 4. 64. 



Kowalewsky, 2. 390. 



Lagrange, J. L., Count de, his prin- 

 ciple of virtual velocities, i. 53, 

 58. 



Lalande, J. J. L. de, 4. 248. 



Lamarck, J. B. P. A. de M., Chev- 

 alier de, classification of species, 

 2. 387; theory of adaptive 

 changes, 3. 8. 



Land and sea, origin of, 2. 320. 



Lankester, E, R., longevity, 3. 



139- 



Laplace, P. S., Marquis de, heat 

 and sound, 2. 29 ; remark on 

 Newton, 204 j nebular theory, 

 260, 293 ; lengthening of day, 

 304 ; volition, 3. 273 5 the hy- 

 pothesis of God, 4. 190 n. 



Laromiguiere, Pierre, I. 173. 



Lavoisier, A. L., 2. 20, 



Law and lawgiver, 4. 202. 



Law, universality of, 2. 151. 



Leibnitz, G. W. B., I. 66-68, 106; 

 preestablished harmony, 34, 191, 



233- 



Lessing and Comte, I. 246. 



Lewes, G. H., on sense of hearing, 

 I. 25 n. ; on Kant, 69-76 ; per- 

 ception, 89, 99, 116; his ^m- 

 totle quoted, 145, 149, 188 ; 



38 



German language, 181 5 Darwin- 

 ism, 2. 398 ; life and mind, 3. 

 98 ; psychology, 109 j the brain, 

 I96n. ; fatalism, 272 n. j social 

 progress, 354. 



Lewis, G. C, 3. 284; progress, 

 286. 



Liegnitz, battle of, 4. 15. 



Life, the beginnings of, Ixi, 2.342- 

 370 ; as adjustment, Ixv, 3. 97- 

 105 ; and mind, Ixv, 3. 106- 

 141, 4. 66 ; physical and psychi- 

 cal, 3. 124, 125 ; identical with 

 ability to maintain life, 139, 



Light and motion, 2. 156. 



Likeness, and unlikeness, I. 18, 45, 

 130, 264, 3. 145, 173, 4. 65; 

 and equality, 3. 150. 



Lion and leopard, relation between, 



3- 25- 



Littre, M. P. E., rejects doctrine 

 of the unknowable, i . 1 1 9 ; on 

 Comte, 209, 2. 63, 67 ; on the 

 will, 3. 264. 



Locality, sense of, 4. 68. 



Locke, John, his philosophy, i. 66, 

 114, 172; reconciliation of his 

 philosophy with that of Kant, 

 106, 4. 107 ; strength and weak- 

 ness of his position, 3. 235. 



Logic, and mathematics, 2. 44, 50 ; 

 Comte's omission of, 71-75 ; 

 and scientific investigation, 78 j 

 philosophy merged in, by Comte, 

 88. 



Lowe, Robert, 4. 11. 



Lubbock, Sir John, fauna of western 

 Europe, 3. 59 j primitive man, 4. 

 51 n., 135. 



Lucretius and spontaneous generation, 

 2. 342. 



Lyell, Sir Charles, mammoths, 2. 

 197; heterogeneity of environ- 

 ment, 3. 313. 



Mach, Ernst, xliii ; on Galileo, i. 



I59n. 

 Mackay, R. W., 4. 3 1 5. 

 Maine, Sir Henry, cxlv j on social 



2 



