INDEX. 



835 



V. 



Vaccimum, 321. 

 Vacuole, 80, 213, 419. 

 Vacuum, experiments on 

 plants in, 401. 



— rigidity of plants in, 395, 



396, 595- 

 Vaginula, 738. 

 Valerian, 58; 

 Valeriana officinalis, 58. 



— Phu, 543. 

 Valerianeae, 125. 

 Valisneria, 675. 

 Val Ionia, 82. 

 Variation, 9, 516,799. 



— of hybrids, 783. 

 Variations in growth, 539, 



541, 549, 551, 552, 556, 



559, 560- 



— in intensity of light, 541, 



551, 552, 554, 556, 559, 



560, 594, 625-630, 634- 

 639, 642. 



— in moisture, 551, 552. 



— of pressure in tissues, 361. 



— in temperature, 540, 541, 



549, 551-553, 556, 559, 

 560, 625, 641, 642. 



Variety of fungi, 380. 



■ hybrids, 780, 783. 



Vascular bundles, 44, 110, 

 114, 126, 157-159, 171, 

 2l6, 230, 325, 416, 423, 

 470, 569-572, 582, 626, 



630, 633, 634, 645, 649, 



652. 



elements of, 132. 



functions of, 230, 355. 



■ of leaves, 49. 



of Monocotyledons, 



170. 



sheath of, 144, 316. 



of skeletons, 129. 



structure of, 130. 



■ transverse section of, 



131- 



— Cryptogams, 171,455,471, 



473, 603, 800. 



fertilisation of, 108. 



heterosporous, 745- 



751. 



isosporous, 739. 



reproduction of, 724, 



730-744. 

 vascular bundles of, 



126, 



— plants, growing point of, 

 460. 



Vaucheria, 70, 76, 82, 84, 311, 

 426, 431, 543, 603, 604, 

 607, 618, 680, 697, 721, 

 73-'=, 733, 788. 



— terreitris, 81. 



Vaucheria sessilis, 108, 733, 

 Vegetable acids, 172, 328, 

 343, 403, 566- 



— ivory, 335, 344,763- 

 Vegetation, aspects ot, 197, 



411, 702. 



— period of, 411. 

 Vegetative forms of fungi, 



387. 



— organs, i, 8, 72, 723. 



— propagation,477,723,769, 

 798, 800. 



— region, 473. 



— repetition, 467. 

 Velamen, 25. 



Velocity of ascending water, 

 236. 



— of growth, 552, 560. 

 Venation of leaves, 48, 51, 



128, 233, 511, 705. 

 Venter, 737, 738, 742. 

 Ventral canal-cell, 737. 

 Venus' Fly-trap, 376. 

 Verbascum, 21, 124, 780. 

 • — nigrum, 789. 

 Vernation, 547. 

 Vessels, 135, 160, 237, 274, 



288, 329, 424, 576, 578, 



581. 



— laticiferous, 171. 

 Vetch, 56, 345, 660. 

 Vibrations, effect on plant, 



221. 



— rigor due to, 595. 



— as stimuli, 597. 

 Vibrio, 387. 

 Viburnum lantana, 52. 

 Vicia, 56. » 

 • — Faba, 281, 283, 368, 539, 



541, 54.3, 691, 707. 

 18, 315, 542, 583, 



692, 708, 764. 

 Victoria Regia, 406, 550. 

 Vine, 52, 56, 177, 270, 274, 



278, 279, 319, 581, 658, 



660, 663, 666, 713. 

 Vines, American, 785, 786. 



— cultivated, 785. 



— hybrid, 784-786. 

 Viola, 186, 789, 791. 



— canina, 791. 



— elatior, 791. 



■ — mirabilis, 791. 



— odorata, 791. 



— tricolor, 794. 

 795. 



Violet light, 303, 696, 697. 

 Virgilia lutea, 475. 

 Virginian creeper, 56, 663, 

 668. 



667. 



Viscum, 26, 166, 368. 



— album, 25. 

 26. 



Vitellin, 334. 



Vitis, 166, 178, i^g, 662,666, 



784, 785. 



— sssti-valis, 785, 786. 



— arizonica, 785, 786. 



— californica, 785, 786. 



— candicans, 785, 786. 



— caribeea, 785. 



- — cinerea, 785, 786. 



— cordifolia, 785, 786. 



— labrusca, 785, 786. 



■ — lincecumii, 785, 786. 



— moniicola, 785. 



— riparia, 785, 786. 



— rotundifolia, 785. 



— rupestris, 785, 786. 



— •uinifera, 236, 784, 786. 

 Voandzeia, 791. 



Volume of carbon-dioxide 

 absorbed, 297. 



— of cell, 422. 



— of daughter-cells equal, 



434- 



— definitive, 412. 



— increase in, 449. 



— of gases in assimilation, 

 equality of, 298. 



— of oxygen absorbed, 398. 



— of oxygen evolved, 297. 

 • — of wood-cells, 239. 



— of yeast-cell, 386. 

 Volvocinese, 483, 604, 730. 



W. 



Wall-flower, 533. 



Walnut, 51, 52, 266, 314, 



579, 763. 

 Warm-chamber, 608. 

 Warping, 211, 588. 

 Water, 202, 203, 225, 296, 



309, 317, 326, 381, 403, 



419, 422, 512. 



— absorption of by roots, 



246. 

 of by leaves, 254. 



— action of on protoplasm, 



617. 



— ascent and conduction of, 



230, 253, 264, 276. 



— of crystallisation, 209. 

 culture, 228, 271, 283, 



290, 291. 

 284. 



— distribution in wood, 241. 



— drainage, 260. 



— excretion of, 266, 273. 

 of in fungi, 280. 



— expelled from motile or- 

 gans, 647-649. 



— of imbibition, 209, 240. 

 lily, 126, 706. 



— mobility of, 242. 



— movements of, 233, 270. 



