472 Index. 



Hume, David, his skeptical philosophy, 85-87, 92. 



,;, hi'is.m Dr William M.. on the therapeutic uses of electricity, 168-169. 



Huxley Prof. Thomas H., his views on human evolution, 20 ; his introduction to 

 Haeckel's Freedom in Science and Teaching, 28, 33 ; his attitude toward 

 philosophy, 31 ; his agnosticism, 37 ; on sense-perception, 96 ; on the nature 

 of phenomena, 99 ; on Herbert Spencer, 105. 



IDEALISM, defended by Prof. William James, 57 note ; refuted by Dr. F. E. Abbot, 



Oil;-'- (i^tVn.i.-d l)\ Kcv. Th.-odore C. Williams, 79-80; Bishop Berkeley on, 

 95 ; Hume's relation to, 86 ; Kant's judgment of, 89 ; Spencer's relation to, 95 



IlesfGeorge, on the scientific method, 76-78. 



Intuition, how Spencer accounts for its genesis 93-95. 



JAMES, PROF. WILLIAM, on consciousness as related to brain-action, 35 note ; 



Janes Dr Lewis G on A. R. Wallace, 17 ; on Ernst Haeckel, 52-53 ; on original 

 scientific research, 197-198 ; on abiogenesis, 198 ; on zoological evolution, 231; 

 on sense-perception, 259-260 ; on realism in art, 316-317 ; on the evolution of 

 art 358-359 ; on symbolism in art, 380 ; on life as a fine art, 407-428 ; in reply 

 to criticisms, 430-433 ; in criticism of Prof. Haeckel and T. B. Wakeman, 



Jussieu, his classification of plants, 186. 



KANT, IMMANL-EL, his theory of knowledge, 68 ; his philosophy as related to that 

 of Hume and Spencer, 87-95, 118 ; his position as a thinker, 120 ; his nebular 

 hypothesis as related to evolution, 446-447. 



KenneUy. Arthur E., on electric and magnetic physics, 153-163. 



Kimbalf, Rev. John C., on zoological evolution, 203-227 ; his essay on the evolu- 

 tion of arms and armor, 246-247. 



Kirchhoff, his invention of the spectroscope, 135, 437. 



Kolliker, Prof., an instructor of Ernst Haeckel, 22 ; a co-worker with Haeckel, 23. 



Koran, its influence on art, 371. 



LAMARCK, JEAN, his doctrine of descent, 5 ; Wallace's opposition to, 12 ; the Neo- 

 lamarckians, 13 ; his contributions to biology, 42, 43 ; his anticipation of Dar- 

 winism, 105 ; his views on inheritance, 208 ; his development theory, 443. 



Land nationalization, A. R. Wallace on, 10. 



Lankester, Prof. Ray, his Neolamarckian views, 12. 



La Place, his nebular hypothesis, 446, 447. 



Lavoisier, his chemical researches, 128-129, 147. 



Leibnitz, his philosophy, 86, 89, 90. 



Lewes, George Henvy, on phenomena, 99 ; his alleged materialism, 112. 



Life as a fine art, 407^31. 



Light, as related to color, 236-237 ; its influence on organic development. 242 ; as 

 related to vision, 242-243 ; Newton's theory of, 264 ; the wave-theory of, 264- 

 266 ; physiology of, 267 ; as related to the color-sense, 281-283, 290-291. 



Linnaeus, compared with Prof. Haeckel, 22 ; his botanical studies, 183-184 ; his 

 contributions to zoology, 206-207. 



Littlefield, John H., on the evolution of painting, 379. 



Lubbock, Sir John, on flower-fertilization, 247 ; on the evolution of the eye, 272 ; 

 on prehistoric art, 364 ; on learning, 425. 



Lucretius, his atomic theory, 130 ; his evolutionary ideas, 207. 



Lyell, Sir Charles, his relation to Darwin and Wallace, 4 ; on human evolution, 

 26 ; his attitude toward philosophy, 31 ; his influence on geological science, 



MAGNETIC PHYSICS, 153-163. 



Maine, Sir Henry, his contributions to history, 436. 



Malaysia, Wallace's explorations in, 3-4. 



Malthusianism, Darwin's relations to. 5. 



Martin, T. C., on electric and magnetic physics, 165-166. 



Mason, Prof. Otis T., on the decline of plant life, 197. 



Materialism, Ernst Haeckel's relation to, &3, 35, 52-53 ; Dr. P. H. Van der Weyde 

 on, 50 ; criticised by Dr. R. G. Eccles, 51 ; wrongly charged against Herbert 

 Spencer, 112-113, 457-459 ; defended by W. H. Bough ton, 119 ; a delusion of 

 the senses, 410 ; refuted by John Fiske, 454-460. 



Maudsley, Dr. Henry, his psychology, 57-58 ; on the external reality, 100. 



Mendelejeff on atomic weights, 134. 



