SUBJECT-INDEX. 



663 



ment and environment, I, 173, 

 177, 479; terrestrial organisms in- 

 habiting, I, 400; adaptation of or- 

 ganisms to change of media, I, 

 470-85; vegetal tissue differentia- 

 tion, II, 253; molecular rear- 

 rangement, II, 359; colloidal con- 

 traction, II, 3G1-2. 



Water-weed, American, invasion of, 

 I, 399. 



Watts, Dr., on The Principles of Bi- 

 ology, I, ix. 



Wax, foliar deposit, II, 260-1. 



Weber, on tactual discriminative- 

 ness, I, 602. 



Weight: relation to environment of 

 organic, I, 174, 177; varying as 

 cube of dimensions, I, 151, II, 

 434, 470. 



Weismann, Aug.: reproductive tis- 

 sue in Medusw, 1, 281; in Daphnidw, 

 I, 290; his theory of the differ- 

 entiated germ-plasm and its fun- 

 damental units, I, 357, 622-3, 

 628-30, 633-44, 646, II, 618-9, 622; 

 the alleged differentiation and 

 plant-phenomena, I, 359-60; and 

 regenerative processes, I, 360; 

 false joints, I, 362; implied com- 

 plexity of determinants, I, 370; 

 theory inadequate to explain cor- 

 relation of sexual traits, I, 372; 

 and variations in peacock's tail 

 feather, I, 372-3, 695, II, 618; his 

 view of natural selection as sole 

 factor in organic evolution, I, 559; 

 the doctrine of panmixia, I, 561-3, 

 612, 632, 649, 667-9, 671, 685, 

 689; arguments against inherit- 

 ance of acquired characters, I, 

 612-3, 651-65, 669-71; blindness of 

 cave-animals, I, 613; current ac- 

 ceptance of his views, I, 631, 

 690; cannot explain the process 

 of natural selection, I, 651; the 

 degradation of the little toe in 

 man, I, 652, 669, 673; caste gra- 



dations of social insects, I, 654, 

 658-65, 670, 675, 678-84, 685; food- 

 seeking instinct in Amazon ants, 

 I, 660, 670; the co-adaptation of 

 co-operative parts, I, 663-4, 670, 

 674, 675, 676; tactual discrimina- 

 tiveness, I, 665, 672; intra-selec- 

 tion, I, 676-8; effect of nutrition 

 on fertility of blow-fly, I, 678-9. 



Whale: weight of brain, I, 599; 

 rudimentary limbs, I, 668-9, 685, 

 693. 



Wheat, adaptive variations, II, 298. 



Whistling, definition of life and, I, 

 112. 



White-Cooper, Mr., on inheritance 

 of abnormal vision, I, 306. 



Willow, nutrition and growth, I, 

 294. 



Wilson, E. B. : composition of chro- 

 matin, I, 260; separation of seg- 

 mentation spheres of Amphyoxus 

 ovum, I, 691. 



Wind: and vegetal bilateral sym- 

 metry, II, 142; and inner vegetal 

 tissue differentiation, II, 275-9, 

 285, 288,^388; and proliferation of 

 Bryophyllum, II, 295; and vegetal 

 sap movement, II, 583, 584, 587; 

 resume, 592-6. 



Wolff, C. : vegetal fructification and 

 nutrition, I, 283, II, 179-80; vege- 

 tal vascular system, II, 283. 



Women (see Man). 



Wood (see Plants). 



Yeast: fermentation, I, 38; fertil- 

 ity, I, 581, II, 440; linear aggre- 

 gation, I, 587, II, 23. 



Zebra marks in horses, I, 314. 

 Zoology, classification, I, 124-5, 



380-9. 

 Zoophytes, structural indefinite- 



ness, I, 173. 

 Zoospores, unit-life of, I, 185. 

 Zygote, of conjugating Algce, I, 283. 



THE END. 



