474 Index. 



SAINT-HILAIRE, GEOFFROY, on the influence of environment, 208 ; his development 



Sampson, Z. Sidney, on the evolution of art, 315 ; on the evolution of music, 385- 

 400 ; in reply to criticisms, 402-403. 



Schelling, his transcendental realism, 91. 



Schopenhauer, his philosophy, 91. 



Schurmann, Prof., on the nature of reality, 408. 



Sculpture, evolution of, 345-359. 



Sea-drift studies, Haeckel's, 30 note. 



Sense-perception, nature of, 241. 



Skilton, James A., on botanical evolution, 197 ; on zoological evolution, 228-230. 



Sociology, Comte's contributions to, 43 ; Spencer's relation to, 48 ; as related to 

 zoology, 213 ; its psychical foundation, 452. 



Solipsism. 66, 69-70, 79. 



Spencer, Herbert, on the origin of instincts, 6 ; criticised by A. R. Wallace, 9 ; 

 his Neolamarckism, 12 ; his doctrine of the Unknowable, 31, 32, 37, 38, 52-53 ; 

 on the relation of consciousness to brain-action, 36 ; his discussion with 

 Frederic Harrison, 38 note, 44, 56 ; his synthetism, 41 ; his attitude to mo- 

 nism, 44, 52-53 ; his indebtedness to Comte asserted, 48 ; his philosophy ex- 

 pounded by B. F. Underwood, 85-117 ; his contributions to biology, 209 ; on 

 the evolution of the eye, 272 ; on the origin of art, 309, 315 ; on architectural 

 types, 321-322 ; his data of ethics, 431 ; his early belief in evolution, 443 ; his 

 formula of evolution, 448, 450, 451 ; his early studies, 449-450 ; his psychology, 

 452-454 ; his doctrine not materialistic, 112, 113, 457-460, 464-4CG ; his letter to 

 the Ethical Association, 466. 



Spinoza, his monism, 38 ; his idea of God, 422. 



Spiritualism, A. R. Wallace's belief in, 10, 16-17 ; its phenomena questioned, 38. 



Spontaneous generation, 198, 199. 



Sterner, Lawrence E., on the evolution of painting, 380 ; on the evolution of mu- 

 sic, 401. 



Sumner, Charles, on art, 304. 



Swedenborgianism, A. R. Wallace's relation to, 11. 



Symonds, John Aldington, on Walt Whitman, 317 ; on the doctrine of evolution, 

 417 ; on mind in nature, 424. 



Synthetic Philosophy, Herbert Spencer's, 85-121. 



TAINE, HIPPOLYTE, on the evolution of art, 305 ; his theory of progress in art, 370 ; 



on the. object of art, 415-416. 

 Taylor, John A., on Herbert Spencer's philosophy, 121 ; on the evolution of art, 



297-314 ; in reply to criticisms, 318. 

 Thales of Miletus, 125, 153. 

 Thompson, Daniel Greenleaf, on the unknown reality, 113 ; on a future life, 115 ; 



on modern realism in art, 315-316. 

 Thomson, Sir William, his chemical researches, 135 ; his judgment of the storage 



battery, 143. 



Treviranus, his evolutionary views, 187-188. 

 Tropical nature, 8. 

 Troubadours, 393-394. 

 Tyndall, Prof. John, on consciousness and brain action, 35 , on the region beyond 



sense-perception, 114 ; on optics, 263. 



UNDERWOOD, BENJAMIN F., on Herbert Spencer's philosophy, 85-117 : in reply to 

 criticisms, 121. 



Unknowable, Spencer's conception of, 31, 32, 37, 38, 52-53. 56, 57, 98 ; Kant's be- 

 lief in, 98 ; explained by B. F. Underwood, 112 ; by D. G. Thompson, 113. 



VAN DER WEYDE, Dr. P. H., on Haeckel's theory of human evolution, 50 ; on the 

 evolution of chemistry, 149-150 ; on zoological evolution, 231-232. 



Virchow, Prof. Rudolph, his discussion with Prof. Haeckel, 22, 28, 29, 33. 



Volta, his discovery of the Voltaic pile, 158. 



Voltaire, 47 ; on the unity of history, 435. 



Von Baer, on evolution. 104 ; on embryology, 208 ; his relation to Herbert Spencer's 

 philosophy, 449-150. 



WAGNER, RICHARD, his school of music. 396. 



Wakeman, Thaddeus B., on A. R. Wallace, 16-17 ; on Ernst Haeckel, 21-49 ; in 

 reply to criticisms, 53-58 ; in criticism of Fiske and Spencer, 462-464. 



Wallace, Alfred Russel, his personal appearance, 3, 16 ; his voyage to Malaysia, 

 6-4, 8 : his relation to the theory of natural selection, 4-5. 442, 443 ; his con- 

 tributions to this theory, 5-6 ; his criticism of the Duke of Argyll, 7 ; his 



