684 



INDEX. 



Antheridium, 609 



Antherozoids, 609; attraction of, by 



malic acid and cane sugar, etc., 529 

 Anthocyanin, 242 

 Antholeucin, 242 

 Anthoxanthin, 242 

 Antidromous torsion, 514 

 Aphanomycesscaber, parthenogenesis in, 



620 



Apheliotropism, 428 

 Apogamy, parthenogenetic, 605, 636; 



vegetative, 602, 636 

 Apogeotropism, 458 

 Apospory, 601, 636 

 Apostrophe, 299, 527, 592 (Fig. 36) 

 Apothecium, 622, 625 

 Apposition, 16; theory of growth, 337 

 Aqueous vapour, condensation of, by 



soil, 48 ; by velamen of Orchids, 50 

 Archegonium, 610; of Moss (Fig. 68), 



611 



Archicarp, 621 



Arendt, analysis of oat plants, 63, 1 29 

 Aromatic acids, 235 ; substances, 232 

 Artabotrys, hooks of, 412 

 Artificial cells (Traube), 42 

 Arum, evolution of heat by spadix of, 



304 



Ascobolus, sexual organs (Fig. 74), 

 623 



Ascogenous hyphse, 622 



Ascogonium, 622 (Fig. 73) 



Ascomycetes, reproduction, 620 



Ascospores, 621 



Ascus, 621 



Ash of plants ; analysis of, in Brassica 

 okracea (Pierre), 62; in species of, 

 Fucus (Gb'dechens), 61 ; in oat plants 

 (Arendt), 63, 129; in varieties of 

 potato (Herapath), 62; after addition 

 of salts to soil (Wolff), 64; com- 

 parison of, 64; in clover (Hellriegel), 

 131 ; silica in, 60 



Askenasy 



on colours of flowers of etiolated 

 plants, 267 



on simultaneous growth of inter- 

 nodes, 339 



on absorption of heat by leaves, 314 



Asparagin, 150, 174, 221 



Aspidiumfalcatum, and Aspidium Filix 

 mas, apogamy of, 60 1 



Asplenium, see Athyrium 



Athyrium Filix fcemina, apospory, 601; 

 adventitious buds on leaves of, 599 



Atkinson, on diastatic ferment, 193 



Atriplex latifolia, heliotropism of, 441 ; 

 geotropism of, 469 



Aulacomnion androgynum, gemmae of, 

 599 



Automatism, 7, 373 

 Auxanometer (Fig. 44), 399 

 Auxotonic movements, 533, 573 

 Avena sativa, localisation of heliotropic 



irritability in, 438 

 Averrhoa bilimbi, tracing of nyctitropic 



movements of (Fig. 58), 540 

 Azygospores, 618 



Bacillus, formation of spores in, 602 

 Bacteria, as tests for oxygen (Engel- 



mann), 256 



Bacterium photometricum, influence of 

 light on movements of, 298, 523, 574 

 Baeyer, on decomposition of carbon di- 

 oxide, 144 



Bailey, on crystalloids in potato, 171 

 Balfour, on extrusion of polar body, 669 

 Balsams, 236 



Bangiacese, reproduction of, 613 

 Banks, on transpiration in its relation 



to the stomata, 107 

 Baranetzky 



on transpiration, 1 1 3 

 on climbing stems, 510 

 on diastatic ferment (Fig. 28), 183, 

 189 

 on growth in length (Fig. 44), 399, 



403 



on heliotropism of plasmodia, 527 



on nutation, 361 



on root-pressure, 95 

 Barbieri 



on distribution of proteids, 164 



on asparagin in potato, 171 



on glutamin in pumpkin seeds, 1 74 

 de Bary 



on cutin, 20 



on callus, 166 



on mechanism of excretion, 244 



on luminosity, 317 



on Peronosporeae, 619, 665 (Fig. 72) 



on Pyronema (Peziza), 621 



on Saprolegniese, 620, 665 



on Sirogonium, 642 



on vegetative apogamy, 60 1 

 Barth&emy, on the function of sto- 

 mata, 72 

 Basidia, 602 

 Basidiomycetes, reproduction of, 605, 



624 



Basidiospores, 625 

 Bast-fibres, 16 

 Bast-parenchyma, conduction of stimuli 



in, 586 

 Batalin 



on excretory glands, 247 



on erythrophyll, 267 



on decomposition of chlorophyll 

 by intense light, 265 



