INDEX. 



« • ■ 



XXXUl 



■' '^'^^ of be^t ■ 



^teria, i.' ^^ 



evolution of^ '„ 

 ^te nature of, ii; 

 'es, commencenial 

 ■ure of ' alternate'' 

 • 56s. 

 , different mode 



I ii- 552- 

 units, mode ofoi 



14, 232. 



ies, on indepEt; 



Leucocytes, i. 1: 



je in parasitic 



I. 



ution of, into At: 

 Peranema, ii. ' 

 ins, ii. 486;origi 

 fusoria from eggi 

 des of analytic ht 

 ii. 489 ; heteroje: 



)rigin of, ii- 5°'" 

 nin, ii. 52 2-H9' 

 nt, heat as a mot 



on>^ 



Ir. James, 



ns, ii. 280- . , 

 ,r. Burden,, e»« 

 on Baciena.; 



loculability ol 



Schelling, theory of life, i. 77. 

 Schleiden, sources of nutriment of 



plants, i. 136. 



Schultze, on Panspermism, i. 262. 



Schwann, on origin of cells, i. 144 ; 

 on Panspermism, i. 262 ; method 

 of experimentation with calcined 



air, i. 337. 



Scolecida, modes of origin of repre- 

 sentatives of, ii. 539. 



Seguin, M., on convertibility of 



forces, i. 9. 



Silicates, solutions of, containing 

 Fungi, xi-xiii; spiral fibres, xiv ; 

 bodies resembling Sarcina, xiv. 



Silicon, as a possible substitute for 

 carbon in living matter, x. 



Small-pox, views on, cxxvii ; origin 

 of, cxliv ; contagiousness of, cxlix. 



Snake-poisoning, cxxviii, cxxx. 



Snow-flakes, ii. 280. 



Solution, nature of process, ii. 44. 



Spallanzani, I'Abbe, on Pansperm- 

 ism, i. 259. 



Species, meaning of term, ii. 547 ; 

 mutability of, ii. 548 ; nothing 

 corresponding to, amongst lower 

 forms, ii. 568 ; nature of, ii. 569; 

 influenced by change in external 

 conditions, ii. 577-582; by use 

 and disuse, ii. 577; to what ex- 

 tent influenced by natural selec- 

 tion, ii. 578 ; Darwin on influence 

 of new external conditions upon, 

 ii. 591 ; variation of, ii. 598 ; fre- 

 quency of spontaneous variation in 

 unknown, ii. 599; modes in which 

 transmutations are brought about, 

 ii. 600 ; Mr. Darwin's views con- 



cerning, ii. 601-603. 

 Spencer, Mr. Herbert, on converti- 

 bility of forces, i. 13; on meaning 

 of persistence force, i. 14; corre- 

 lation of vital and physical forces, 

 i. 22; consciousness, i. 45; mor- 



r^ roineofi'''"' phological development, i. 52 ; 

 NI. -L»f ^^ of, iiill characteristics of living things, i. 



74; elements of organizable mat- 

 ter, i. 84; instability of protein 

 compounds, i. 86; original evolu- 



■^^ - on he 



Prof.. 



tero? 



tion of life, i. 92 ; artificial evolu- 

 tion of organic matter, i. 94; oper- 

 ation of physical forces upon living 

 tissues, i, 98 ; evolution of living 

 matter, i. 163; organic polarity, 

 ii. 23 ; physiological units, ii. 23, 

 90, 98 ; law of heredity, ii. 94, 

 97; nature of evolution, ii. 120; 

 two meanings of natural selection, 

 ii. 573; denies existence of internal 

 organizing tendencies, ii. 585 ; 

 cause of organization, ii. 587 ; his 

 explanation of existence of undif- 

 ferentiated organisms in present 

 day, ii. 587-589; physiological 

 units, ii. 603 ; limits to variability 

 of species, ii. 610. 



Spermatozoa, development of, i. 213, 



Sperm-cells, ii. 96. 



Spiral fibres, v ; where found, viii ; 

 in association with mycelium, 

 viii ; in silicated solution, xiv. 



Spirillum, i. 277, ii. 139. 



Spirogyra, transformations in, ii, 



387-393- 



Spontaneous Generation, reason for 



rejecting term, i. 244 ; views of 

 ancient writers concerning, i. 253; 

 other views concerning, i. 255- 

 263 ; two processes included under 

 term, ii, 172. 



Spores, mode of formation of, in 

 CEdogonium, i. 177; in Zygne- 

 meacese, i. 179; in Fungi and 

 Lichens, i. 183 ; in Peziza, i. 184; 

 in Hydrodictyon, i. 186 ; Physcia, 

 i. 186. 



Starch-grains, production of, ii. 65. 



Steenstrup, on alternate generation, 

 ii. 565. 



Stein, views concerning Acinetee 

 and Vorticell^e, xciv-xcvii. 



Survival of the fittest, ii. 575. 



Syphilis, cxxxii. 



Tables relating to : 



of 



— (i) origm 

 living things, i. 252 ; (2) modes of 

 origin of independent living units, 

 ^^- 545; (3) anodes of reproduction 



) 



ii. 453 



% 



