SUBJECT-INDEX. 



643 



IDEAS (see Psychology). 



Individuality: the botanical, I, 244- 

 6; the zoological, I, 246-7; the fer- 

 tilized germ product, I, 248-9; 

 definition of life, I, 250. 



Individuation: and genesis, I, 583- 

 4; II, 428-30, 499; total cost, II, 

 435-7; genesis and evolution, II, 

 501-5, 529, 530. 



Infusoria: functional specialization, 

 I, 391; primary aggregate, II, 87; 

 asymmetry, II, 187, 188; differ- 

 entiation, II, 299, 385; genesis, II, 

 442, 446, 452. 



Injuries, repair of animal, I, 219, 

 222-4, 316, II, 102, 611. 



Insanity, inherited, I, 314. 



Insects: temperature, I, 47, 174; 

 phosphorescence, I, 49; self-mo- 

 bility, I, 175; parthenogeuesis, I, 

 274-5, 277, 294, 592, 640; growth 

 and reproduction, I, 292; species 

 distribution determined by pres- 

 ence of, I, 396-7; eyes of cave-in- 

 habiting, I, 309, 612-3, 614, 647-9, 

 693; persistent types, I, 408; re- 

 trograde development, I, 458; 

 segmentation, I, 408-9; II, 114; 

 aborted organs, I, 474; East In- 

 dian distribution, I, 478; floral fer- 

 tilization, I, 525; II, 168-9, 40P 7, 

 608; appliances for cleaning an- 

 tennae, I, 651; eyes, I, 658, II, 

 318; integration and homology, II, 

 111-3, 121; bilateral symmetry, II, 

 198; sexual selection, II, 269; 

 eyes, II, 318; environment, II, 

 433; cost of genesis, II, 436, 437; 

 development and genesis, II, 461; 

 nutrition and genesis, II, 476, 

 490-2. 



Insects, Social, origin of caste- 

 gradations in, I, 654-65, 670, 674, 

 675, 678-84, 686-8. 



Instability of the homogeneous (see 

 Homogeneous). 



Instinct: organic evolution and co- 

 ordination of, in mason-wasp, I, 

 5/4; a vital attribute, I, 578; loss 

 of self-feeding, in Amazon ants, I, 

 660-1, 663^. 



Integration: in chemical evolution, 



I, 23; morphological composition, 



II, 4-6; arthropod, II, 111-4, 121: 



physiological, in plants, II, 292-5, 

 295-8, 390; of organic world, II, 

 396-408; genesis, II, 424, 426-9. 



Intelligence, a vital attribute, I, 

 579. 



Internodes: varied development, II, 

 45; nutrition and length, II, 178-9. 



Intestine (see Alimentary Canal). 



Intra-selection, Roux's theory of, I, 

 562, 676-8. 



Irish, nutrition and genesis, II, 510. 



Iron: colloidal form of peroxide, I, 

 17, 20; molecular rearrangement, 

 I, 337, 704; vegetal absorption, II, 

 573. 



Iron industry, interdependence of 

 social function, I, 237-41. 



Isolation, and species differentia- 

 tion, I, 568-9. 



Isomerism: of organic constituents, 

 I, 4, 9, 25; tri- and poly-atomic 

 compounds, I, 11, 13, 25; muscular 

 action, I, 59; organic evolution, I, 

 700, 703; differentiation of nerve- 

 tissue, II, 356-60, 361; of muscu- 

 lar tissue, II, 361-4. 



JACKSON, J. Hughlings, on inherit- 

 ance of nervous peculiarities, I, 

 313, 694. 



Jaundice (see Disease). 



Jaws, of uncivilized and civilized, 

 I, 541-2, 612, 693. 



Johnson, G. Lindsey, on inherited 

 myopia, I, 694. 



Jones, T. Rymer, on fission, I, 585, 

 590. 



Julin, C., on " castration parasi- 

 taire " in Crustaceans, II, 493-6. 



Jungermanniaccce: morphology, II, 

 33-4; relations of high and low 

 types, II, 35, 55; continuous and 

 discontinuous development, II, 

 52-5, 92: tubular structure, II, 58, 

 62; proliferous growth, II, 67, 91; 

 colour, II, 75, 265: symmetry, II, 

 140; fertility and growth, II, 441. 



Jussieu, A. de, plant classification, 

 I, 378. 



KABYOKINESIS, I, 257, 259, 263-5. 



Kerner, A., on cauline buds. I, 358; 

 plant-classification in Natural His- 

 tory of Plants, I, 378-9. 



