286 



INDEX. 



centage, 46; principles of diffu- 

 sion, 47; aeration of the plant 

 body, 47, 48; diffusion through 

 cell wall, 48, 49; stomata, 49; 

 Stahl's test, 49; conditions for 

 absorption, 50; for elaboration, 

 50; rate of diffusion, 50 

 Carnivorous plants, 81 ; bacteria as- 

 sociated with, 83; enzymes, 83 

 Carotin, 52 

 Cell-division, relation to growth, 165 ; 



relation to gravity, 198, 199 

 Cell-sap, active agent in absorption, 

 106; density and composition, 

 how maintained. 111, 112 

 Chasmogamy, 274, 275 

 Chemical fertilization, 330, 331, 360 

 Chemical stimuli, 226, 287 ; conditions 



of influence, 227 

 Chemotaxis, 333-337 

 Chemotropism, 231-238, 236, 237, 345 

 Chlorophyll, location, 51 ; physical 

 characteristics, 51 ; mixture of 

 pigments, 51 ; associated pig- 

 ments, 51; carotin, 52; solvents, 

 52; fluorescence, 53; spectrum, 

 53 ; absorption bands, 53 ; amount 

 of light absorbed, 54; efficiency 

 of chlorophyll screen, 55; pro- 

 portion of light absorbed, 55; 

 amount, 55; dependence upon 

 iron, 57, 58, 101 ; upon light, 57 ; 

 in guard ceils of stomata, 147 

 Chlorophyll grains or granules, see 



Chromatophores 

 Chloroplastids, see Chi'omatophores 

 ■Chlorosis, 101 

 'Chlorovaporization, 137 

 Chromatophores, body and pigment, 

 57; photosynthesis in isolated 

 chromatophores, 57; position af- 

 fected by light, 317, 318. See also 

 Chlorophyll 

 Circumuutation, 246 

 Cleistogamy, 272, 374, 275 

 Climate, continental and island, 320, 

 321 



Colloids, 139 



Colored screens, 56 



Common salt, 93, 337 



Comparison of photosynthetic and 

 respiratory activities, 65 



Conditions essential to life, 6 



Conducting tissues, 156, 157 



Contact, irritation by, 239-351; ef- 

 fect on amount of growth, 340, 

 241 



Correlation, 251, 352 



Corrosive action of roots, 125 



Crystalloids, 129 



CoscuTA, 88-90, 244^246 



Cytoplasm, ratio between, and nu- 

 cleus, 181 



Cytoplasmic membranes, 106 



D 



Dew, 128 



Diastase, 64 



Diffusion, principles of, 47; rate of 

 COa diffusion through minute 

 openings, 50 ; physics of, 108 



Dissociated atoms, effect of, 328, 329 



Dodder, 88-90, 244-346 



Drobeka, 82, 83 



E 



Ecology, 253, 853 



Ectoplast, ,106 



Electricity, 337-239; influence on 

 amount of growth, 288; on ger- 

 mination, 289; on direction of 

 growth, 239; on locomotion, 239 



Energy, need of, 12 



Engelmann's bacteria method, 56 



Enzymes, formed in connection with 

 respiration, 19, 29, 80, 33; zy- 

 mase, 33; diastase, 64; effect of 

 light on, 209, 210; in carnivorous 

 plants. 83 



Bquisbtum, reproduction, 276 



Excretion, by roots, 125; of water, 

 136-138 ' 



Exercise, advantage of, 191 



