396 Index. 



llcrschel, f^ir John, his theory of the luminous sun-spots, Cj; of the form of 

 vhe UIliver^^e, OT-tW. 



llollirook, ])r. ^Martin L., on vepetal evolution, 135. 



II<iniolo};y, in animal evolution, ^l\\\-'2^\'Z. 



Hooker, i)r., on Herbert Si)eneer, '.I ; his relation to Darwin's Origin of Spe- 

 cies, 30. 



Horse, the evolution of, 38, 08-100, 2(t2. 



Humholilt, 'William von, his ])oliti(;al i)hilosophy compared with Herliert 

 Spencer's, 14. 



Hume, David, 343. 



Huxley, I'rof. Thomas H., his defence of IJarwin, 40; on the iiilluence of the 

 Orifrin of Sjiecies, 42; on Darwin's honesty, 44-4.'j; on the i)roof of bio- 

 loijieal evohition, KM); on organic, and inorjianic .substance, 118; <>n 

 micro-orjranisms, 11".); on bathybius, 111); evolution no longer an hypoth- 

 esis, 304 ; on mind and matter, 350, 30U. 



lONKoi-s TtoCKS, the fonnatitm <if, 03. 



hiiumrtality, evolution's word concerning, 334-33C, 338. 



Industrial evolution, 374-375. 



Infertility of species, 149, 151-153, 155. 



Intuitional philosophy, ;J40. 



Island life, illustrative of evolution, 08, 156, 301-302. 



.Tames, Trof. William, on mental evolution, 185. 



Janes, Dr. Lewis (i., on the philosophical aspects of cosmic evohition, 74; on 

 the evolution of the earth, 7'.)-103; on the laws of orjranic and iuorjranic 

 growth, 13(i; on the law of population, 172; on mental evolution. 197; on 

 Si)encer's theorv of government, 230 ; on the personalitv of the Absolute, 

 253 ; on the evoluticm of morals, 257-280, 283-284, 319-33(i ; on Spencer's " Un- 

 knowable," 330-340 ; on the philosophy of evolution, 365. 



Japan, evolution in, 50. 



Judaism, as related to evolution, 244-245, 252; as related to Christianity, 246, 

 339-340. 



Kaxt, Emani'el, his conception of the iJina an sicli, 182; on the moral law, 

 2(0; on good and evil, 273; on the will, 277; the evolution-philosophy not 

 derived from him, 343; his Critique of J' lire lieason, 343, 346. 



Kennan. George, his testimony as to Spencer's wTitings in Siberia, 6. 



Krakatoa, the volcano of, 94. 



Lajiarck, anticipated by Dr. Erasmtis Darwin, 26 ; his advocacy of evolution, 

 32; his theory of use as affecting development, 149-150, 155; importance of 

 his hypothesis, 104; its correctness, 165; its revival by I'rof . Cope, 174; a 

 forerunner of the evolution philosophy, 343. 



Language, its brain-convolution found in anthropoid apes, 162 ; evidences that 

 primitive man was deficient in speech, 164; its evolution, 262, 264, 363: it 

 differentiates man from the lower animals, 262, 312 ; the connecting luik. 

 between mind and matter, 363-364. 



Laplace, his theory of solar and i)lanetarj' evolution. 56-60; rejected in part 

 byFaye, 62; the theory not wholly satisfactory, 71; objections to it, 73; a 

 forerunner of evolution, 343. 



Law of conduct, as formulated by the evolution philosophy, 272. 



Laws, natural and divine, 133. 



Laws of evolution, 141, et seq. 



Le Conte, I'rof. Joseph, on the subsidence of the earth's crust, 93 ; on geolog- 

 ical evolution 95-96 ; on the effect of astronomical and geological studies, 

 102-103; on spontaneous generation, 140; his definition of evolution. 141; 

 his formulation of its laws, 141 ; his judgment of Romanes' theory. 151 ; on 

 the influence of natural and sexual selection, 290; on artificial anil natural 

 selection, 306 ; on s]iirit immortality, 336. 



Leibniz, his doctrine of ])re-existence, 275. 



Lewes, George Henry, on the spinal cord as a seat of consciousness, 193; on 

 the interdependence of organic and mental forces, 363. 



Linna?us, Darwin's acquaintance with his system, 20; his basis of classifica- 

 tion, 36. 



Locke, John, 343. 



Looking Backward, .371 -.372, 388. 



Lotze, Herman, his doctrine of pre-existence, 275. 



Loves of the Plants, 26. 



Lubbock, Sir .John, on the intelligence of the ant, 172 ; on ancestor-worship, 23.5. 



Lyell, Sir Charles, compared with Darwin, 29 ; his doctrine of continuity, 30 ; 

 his relation to the Origin of Species, 30; his endorsement of Darwin, 40; 



