660 



SUBJECT-INDEX. 



multicellular, I, 183-96; Hertwig s 

 classification of tissues, I, 189; 

 continuity of units, I, 190-2; sys 

 tems of organs, I, 192; division 

 into universal and particular, I, 

 193-4; general truths, I, 194-5; 

 plant and animal, contrasted, I, 

 195-6; precedence of function or, 

 I, 197, 211; correlative complexity 

 of function and, I, 200, 211; pro 

 gressive concomitant differentia 

 tion, I, 201-4; physiological units, 



I, 225-6, 362, 364, 369-71, II, 613; 

 social and organic interdepend 

 ence, I, 235-42; varied by func 

 tion, I, 334, 535; II, 217 (see Ac 

 quired Characters); zoological 

 classification, I, 390-2; equilibra 

 tion, I, 521, 557; progress of, and 

 genesis, I, 590-1; II, 462; coopera 

 tion with function, II, 3; evolu 

 tion and increased, II, 4; retro 

 grade metamorphosis, II, 12; 

 simulated homologies, II, 13-14; 

 earliest organic forms, II, 19; 

 cylindrical vegetal, II, 57-62; per 

 manence and complexity, II, 295, 

 296; function and epidermic, II, 

 312-4, 387; and muscular, II, 369, 

 391; adaptation and equilibration, 



II, 392; persistence of force and 

 physiological adaptation, II, 394; 

 evolution, II, 501-4. (See also 

 Morphology.) 



Struggle, for nutriment among com 

 ponents of an organism, I, 562, 

 676; for existence (see Natural 

 Selection). 



Struthers, Sir J. : on heredity, I, 

 305, 314; digital variation, I, 321; 

 rudimentary limbs of whale, I, 

 668. 



Strychnine, effects of, I, 54, 55. 



Sturgeon, size of ova and adult, I, 

 144. 



Sugars: properties, I, 10-11; trans 

 formations, I, 38, 40, 66, 69, 70, 

 II, 593. 



Suicide, hereditary tendency to, I, 

 307. 



Sulphur: allotropic, I, 4, 59; organic 

 evolution, I, 703. 



Sun (see Light). 



Survival of the Fittest, the expres 



sion, I, 530, 610. (See Natural 



Selection.) 



Swan, vertebrae of neck, II, 123. 

 Swiftness, a vital attribute, I, 



578. 

 Syllis ramosa, lateral branching, I, 



166, 361, II, 105, 108. 

 Symbiosis, II, 399, 400. 

 Symmetry (see Morphology). 

 Syphilis, hereditary transmission, I, 



623. 



TACTUAL Perceptiveness, heredity 

 and the distribution of, I, 602-8, 

 633, 665, 666, 672, 692. 



Tcenia (see Entozoa), 



Tansley, A. G., I, vi, II, vi; adapta 

 tion of reproductive activity to 

 conditions in Algw, I, 288-9; 

 shapes of Caulerpa, II, 22; stem- 

 thickening in extinct Thallo- 

 phytes, II, 56; natural selection 

 and leaf-distribution, II, 179. 



Tape-worm (see Entozoa). 



Taste, dependent on chemical ac 

 tion, I, 54. 



Teeth: hereditary transmission, I, 

 306; suppression of mammalian, I, 

 457; of uncivilized and civilized, I, 

 541, 693. 



Tegumentary organs, origin of, I, 

 314-6. 



Telegony, or the influence of a pre 

 vious sire on offspring, I, 624-7, 

 644-6, 649-50. 



Temperature (see Heat). 



Tension (sec Strain). 



Termites: fertility, I, 583, II, 493; 

 late development of sexual or 

 gans, I, 680; nutrition and differ 

 entiation of forms, I, 681. 



Tetramorium, utilization of aphides 

 by, I, 660-1. 



Thallophyta: size, I, 338, 139; low 

 co-ordination of parts, I, 164; 

 pseudo-foliar, II, 28; &quot;transition 

 place,&quot; II, 30; simulation of 

 higher types, II, 32; secondary 

 thickening in extinct species, II, 

 56; sexual and asexual genesis, II, 

 84. (See also Algce.) 



Tickling, physiology of, I, 76. 



Tide (see Sea). 



Time, as a factor in growth, II, 77. 



