INDEX. 



Abies pectinata, heliotropism of leaves 

 of, 444 



Absorption of; ammonia, by leaves, 86 ; 

 carbon dioxide in light (Figs. 17, 18), 

 8 1, 142 ; gases by leaves, 72 ; influence 

 of pressure on, 73; nitrogen, 85; 

 oxygen, 77 ; salts, 55 ; substances in- 

 soluble in water, 54 ; water by leaves, 

 65 ; water and substances in solution 

 by roots (Figs. 10, n), 46; influence 

 of metabolism on, 53; influence of 

 temperature on, 52 ; relation of tran- 

 spiration to, no, 115 



Absorption, Law of, 57 



Acacia Farnesiana, nyctitropic move- 

 ment of, 540 



Acer, calcium oxalate in, 22 



Acetabularia, life-history of, 632 ; re- 

 production of, 607 



Achlya, reproduction of, 620 



Achromatin, 27 



Acidity of roots, 55 



Acids in plants, metabolism, 225 ; rela- 

 tion to turgidity, 41, 391, 580 



Acrylcolloid, 31 



Adaptation, 677 



Adhesive discs of tendrils, 411 



Adoxa moschatellina, Diageotropism of 

 rhizomes of, 501 



Aecidia, 624 



Aecidiospores, 624 



Aethalium, proteids in, 25 ; reaction to 

 stimuli, 527; killed by high tempera- 

 ture, 279 



Aerobia, 211 



Aesculus Hippocastanum, geotropic cur- 

 vatures in, 465 ; sensitiveness of root- 

 tips, 493 



Agapanthus umbellatus, diageotropism 

 of pedicel of, 463 



Agaricus melleus^ luminosity of, 316; 

 olearius, luminosity of, 316 



Aggregation, 564 



Air-roots, 50; of Orchid (Fig. 12), 



Air, composition of, 74; solubility of 



component gases in water, 74 

 Alcannin, 239 

 Alcoholic fermentation, 208 

 Aldehydes, 236 

 Aldrovanda, conduction of stimulus in 



leaf, 587 ; movements of leaf, 545 

 Aleurone grains, 25, 170; composition 



of, 184; structure of (Fig. 28), 183 

 Algae, life-history of, 63 1 ; sexual repro- 

 duction in, 605 (Figs. 65, 66, 67, 69) 

 Alizarin, 238 



Alkaloids, origin of, 223, 268 

 Allantoin, 221 



Allassotonic movements, 533 

 Allium sativum, heliotropism of, 428 

 Allium ursinum, fixed light-position of 



leaf of, 445 

 Aloin, 243 



Alternation of Generations, 628 

 Amici, on relation of stomata to light, 



107 



Amides, 150, 221 

 Ammonia, absorption of, by leaves, 86 ; 



by roots, 127; formation in plants, 



150, 223 

 Amreboid movements, relation of, to 



oxygen, 297; to temperature, 298; 



mechanism of, 558 

 Amphicarpcea monoica, paraheliotropism 



of leaf of, 552 



Amyloplasts (Fig. 26), 26, 180 

 Analysis of plants, 121 

 Anaerobia, 211 

 Anaesthetics, action of, on mature motile 



organs, 550 



Ancylisteae, reproduction of, 618 

 Ancistrocladus, hooks of, 412 

 Angiosperms, reproduction of (Figs. 70, 



75). 615 



Angle of deviation, 421, 503 

 Anisotropic organs, 424 

 Annual rings, 351 

 Annuals, 597 

 Anonaceae, 412 



