INDEX. 



687 



of, 334; formation of, 15, 177; ligni- 

 fication of, 18; mucilaginous degene- 

 ration of, 17 ; in polarised light (Figs. 

 4, 5), 14, 15; silica in, 21; stratifica- 

 tion of (Fig. 7), 16; striation of (Fig. 

 8), 16. Theories of growth of; by 

 apposition (Strasburger and Dippel), 

 16, 336; by intussusception (Naegli), 



i5> 33" 



Centrifugal force; influence of, on direc- 

 tion of growth (Fig. 51), 456; on rate 

 of growth, 410, 413, 461 



Ceropegia Gardnerii, circumnutation of, 



363. 5'4 



Chagtomium, reproduction of, 624 

 Chaetophora, pulsating vacuole in, 522 

 Chara, 428 ; rotation of protoplasm in, 



521 

 Characese, 1 1 ; vegetative reproduction 



of, 599 ; life-history of, 633 

 Chatin, on aerial roots, 50 

 Chemical stimuli, action of ; on anthero- 



zoids, 529; on tentacles of Drosera, 



547 ; on zoospores, 529 

 Chlamydomonas, pulsating vacuole in, 



522 

 Chlorine, as a constituent of the food, 



136 



Chlorotic plants, 136, 240 

 Chlorophyll ; absorption-spectrum of, 



155; chemical composition of, 154; 



decomposition of, 266; fluorescence 



of, 155 ; formation of, 239, 241 ; func- 

 tion of, 151, 156; Lommel's theory, 



254; Pringsheim's theory, 157, 261; 



in Floridese, 152; influence of light 



on, 262; relation of iron to, 239; 



spectrum of (Plate i), 155 

 Chlorophyll-band, movement of, of Me- 



socarpus, 525 

 Chlorophyll-bodies, 152 

 Chlorophyll-corpuscles, 8, 13, 141, 152; 



movements of, in light (Fig. 36), 299, 



526; structure of (Fig. 22), 153 

 Chlorophyllan, 154 

 Choanephora, effect of starvation on 



(Fig. 30), 219 

 Cholesterin, 243 

 Chromatin, 27 



Chytridiaceae, 605; conjugation of, 618 

 Chytridium vorax, directive action of 



light on zoospores of, 524 

 Cichoritim Intybus, laticiferous vessel 



of (Fig. 24^), 167 

 CiesielsM, on geotropism, 464, 467 

 Cilia, i, 519 

 Ciliary movement, 519 

 Circulation of protoplasm, 296, 521, 558 

 Circumnutation, 362 ; diagram of (Fig. 



41), 364; relation to twining, 508 



Cistinese, movements of stamens of, 



545 



Citrus, adventitious budding in, 599 



Claviceps, asexuality of, 624; life his- 

 tory of, 634 



Cleistogamous flowers, 647 



Clinostat (Fig. 48), 417 



Cloez, on evolution of oxygen at low 

 temperature, 271 



Clostcrium moniliforme, locomotion of, 

 520; phototaxis of, 525 



Cobcea scandens, tendrils of, 486 



Ccelebogyne ilicifolia, adventitious bud- 

 ding in, 599 



Cohn 



on aggregation, 565 

 on Bacteria exposed to low tempe- 

 rature, 272 



on Bacteria exposed to high tempe- 

 rature, 279, 283 



on contractile vacuoles, 522, 558 

 on leaf of Aldrovanda, 587 

 on effect of exposure to light on 

 leaf of Oxalis, 538 



on rotation of protoplasm, 297 

 on stamens of Cynarese, 568 



Cold, effect of, on germination of seeds, 

 271, 281; on Bacteria, 272 ; relation 

 of, to life of plants, 275 



Coleochoete, fruit of, 625; life-history 

 of, 632 



Colin, on effects of high temperature on 

 seeds, 280 



Collema microphyllum, reproduction of 

 ( Fi g- 73)> 622 



Colophony, 236 



Colouring matters, 238; of flowers, 

 241 



Compass-plants, 446, 506 



Condensation of aqueous vapour by soil, 

 48 ; by velamen of Orchids, 50 



Confervaceae, 9 



Confervoideae, reproduction of, 606 



Conidiophore, 602 



Coniferin, 234 



Conifers, calcium oxalate in, 22 



Conjugation, 607 (Figs. 65, 66, 69) 



Continuity of protoplasm, 23, 374 (Fig. 

 64), 5 8 5 



Continuity of reproductive substance, 

 660 



Contractile vacuoles, 522, 558 



Contraction, 6, 557 



Contractility, 6, 557, 568 



Convolvulus, twining of (Fig. 54), 516 



Coprinus, etiolation of, 393; heliotrop- 

 ism of, 428 ; hydrotropism of, 478 



Corallineae, reproduction of, 615 



Cordiceps, asexuality of, 624 



Cordyline rubra, geotropism of, 458 



