SUBJECT-INDEX. 



629 



sexual selection, II, 269; wing 

 spurs, II, 313; outer tissue differ 

 entiation, II, 314-5, 387; ali 

 mentary canal development, II, 

 325, 327; muscular colour and 

 activity, II, 365-9; nutrition, II, 

 433; cost of genesis, II, 436; 

 growth and genesis, II, 454, 458; 

 heat expenditure and genesis, II, 

 468-9, 474; activity and genesis, 

 II, 470-2, 474; contrasted mam 

 malian fertility, II, 470; eggs of 

 wild and tame, II, 478; fertility 

 of blackbird and linnet compared, 

 II, 503; Owen on skeleton of, II, 

 559, 560, 561. 



Bischoff, embryogeny of human 

 arm, I, 169. 



Bison, modifications entailed by in 

 creased weight of head, I, 512. 



Blackbird, contrasted with linnet 

 in development, II, 503. 



Blainville, de, definition of life, I, 

 79, 93. 



Blastosphere, independence of cells 

 in Echinoderm larvae, I, 185. 



Blastula, definition of life and for 

 mation of, I, 112. 



Blood: similarity of iron peroxide, 

 I, 17; metabolic processes, I, 69; 

 segregation of abnormal constitu 

 ents, I, 180; protozoon life of cor 

 puscles, I, 186-7; morbid changes, 



I, 221, 701; assimilative power 

 and organic repair, I, 221-2; res 

 piratory tissue differentiation, II, 

 310-1; pressure in mammals, II, 

 340. (Sec also Vascular System.) 



Blow-fly, Weismann on nutrition 



and genesis in, I, 678-9. 

 Boers, Cape, habits and fertility, 



II, 508. 



Boismont, A. B. de, on human fer 

 tility, II, 511. 



Bone: growth and function, I, 1.&quot;&amp;gt;1; 

 adaptability, I, 230; II, 217-8; 

 function and weight, I, 308, 693; 

 mammalian cervical vertebrae, I, 

 394; evolution and vertebral col 

 umn, I, 470-1; partial develop 

 ment, I, 473; size of head as in 

 fluencing, I, 512, 53(5-9; direct 

 equilibration and strength, I, 

 527; natural selection and co- 



adaptations, I, 614-21, 674, 677; 

 rudimentary limbs of whale, I, 

 668, 685, 692; inheritance of ac 

 quired modifications in Punjabis, 



I, 689; skull development, II, 222; 

 theory of supernumerary, II, 223; 

 Cope on origin of vertebrate osse 

 ous system, II, 225-7; differentia 

 tion, II, 344-56; false joints, II, 

 370-2; Owen s theory of verte 

 brate skeleton, II, 548-66. 



Book-worm, food of, I, 77. 



Born, G., experiments on frog-lar 

 vae, I, 365. 



Botany, biological classification, I, 

 124, 125. (Sec Plants.) 



Bothrioccphalus, development, II, 

 490. 



Botryllidw: development, I, 166; in 

 dependence of components, I, 247; 

 agamogenesis, I, 641. 



Bower, Prof., on alternation of gen 

 erations, II, 84. 



Brachiopoda, rude vascular system, 



II, 340. 



Bradbury, J. B., on vaso-dilators, I, 

 55. 



Brain: natural selection and mental 

 evolution, I, 553; analysis of sub 

 stance, I, 596; weight in higher 

 animals, I, 598-9; size in civilized 

 and uncivilized, II, 530. 



Branches (see Morphology). 



BranchicB (see Respiratory System). 



Brass, effect of antimony on, I, 121. 



Bread, diamagnetism, I, 370. 



Breeding: heredity, I, 304-5; in- 

 and-in, I, 344-7, 353; II, 615; 

 pure and mixed, I, 354, 625. 



Bricks, changed equilibrium shown 

 by, I, 38, 42. 



Brodie, T. G., cell chemistry, I, 

 260. 



Brownell, Miss J. L., on birth-rate 

 in United States, II, 520. 



Brown-Sequard, on inherited epi 

 lepsy, I, 312, 624. 



Bryopliyllum, peculiar proliferation, 

 II, 295. 



Bryoplujta, large size attained by 

 some, I, 138. 



Bryozoa, gemmation, I, 588. 



Budding (sec Gemmation). 



Buds: development, I, 167-8; the- 



