INDEX. 



^5 



V, 



Vacciniuni, 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. 



— Pbu, 543. 

 Valerianeae, 125. 

 Valisneria, 675. 

 Vallonia, 82. 

 Variation, 9, 516, 799. 



— of hybrids, 783. 

 Variations in growth, 539, 



54I5 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, no, 

 114, 126, 157-159, 171, 

 216, 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, 1 30. 



transverse section of, 



13^* 



— 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. 



Vattcheria, 70, 76, 82, 84, 311, 

 426, 431, 543, 603, 604, 

 607, 618, 680, 697, 721, 

 732,733,788. 



— terrcstris, 81. 



Vaucheria sessilis, 108, 733. 

 Vegetable acids, 172, 328, 

 342, 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. 

 Ferbascum, 21, 124, 780. 

 • — nigrum, 789. 

 Vernation, 547. 

 Vessels, 135, 160, 237,274, 



288, 329, 424, 576, 578, 



58r. 



— laticiterous, 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, 543, 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. 



— odorala, 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. 



Viteliin, 334. 



Vitis, i66, 178,279,662,666, 

 784, 785. 



— lestivalis, 785, 786. 



— arizonica, 785, 786. 



— californica, 785, 786. 



— candicans, 785, 786. 

 ^ caribaa, 785. 



— cinerea, 785, 786. 



- — cordifolia, 785, 786. 



— labrusca, 785, 786. 



— lincecumii, 785, 786. 



— monticola, 785. 



— riparia, 785, 786. 



— rotundifolia, 785. 



— riipestris, 785, 786. 



— lünifera, 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-ceils, 239. 



— of yeast-cell, 386. 

 Volvocineae, 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. 



