6l2 



INDEX 



Eder, 1 1 8, 237, 243, 250 ; automatic register 

 of transpiration, 242. 



Effrant, 564. 



Eggerty u. Nilson, 428. 



Ehrhardt, 475. 



Elaioplasts, 479. 



Eleagnns, root-tubercles of, 396. 



Electrosynthesis, 292. 



Elfert, 482, 599. 



Elfving, 221, 308, 335, 383, 497, 523, 539 ; 

 action of light on fungi, 562 ; of ether 

 on respiration, 564 ; of light and low 

 temperatures on etiolin corpuscles, 335. 



Elodea, 94, 96, 188, 204, 205, 310, 333, 



.337,. 341, 345- 

 Emissaria, 253. 



Emmerling, 173, 407, 410, 459. 

 Empusa, 374. 



Endoplasmic membrane, 81. 

 Endosperm, depletion of, 597-9 ; formation 



of enzymes by, 598, 599. 

 Energid, 60. 

 Engelmann, 302, 304, 307, 308, 311-1 5, 



335, 336, 341, 345, 352, 358, 54o; on 

 assimilation by etiolated plants, 304 ; 

 bacterium method of, 350; gas vacuoles, 

 109, 137; purple bacteria, 307 ; curves 

 of photosynthesis and absorption, 342, 

 343, Figs. 51, 52 ; - - proportionality 

 between, 348 ; aberrations from, 349 ; 

 spectrum of erythrophyll, 495. 



Entomophthora, 374. 



Enzymes, 64, 501 ; excretion of, by parasites, 

 374; - by roots, 174; functions of, 

 503 ; changes in rate of production, 

 504 ; influence of external conditions 

 on action of, 505 ; of temperature 

 . on, 505. 



Epacrideae, 371. 



Epilobium hirsutum, 275. 



Epipogon, 368. 



Equisetum, 180, 435. 



Eranthis Jiiemalis, 285. 



Erdmann, 206. 



Ericaceae, 371. 



Erikson, 374. 



p:rlenmeyer, 356, 601 ; ripening of grapes, 

 602. 



Erodium gruimtw, 161. 



Errera, 36, 221, 426, 486, 604 ; on glycogen, 

 71; --in fungi, 476; on karyokinetic 

 and magnetic figures, 56. 



Erythrophyll, influence of sugar on produc- 

 tion of, 496 ; -- of light, 496, 497. 



Eschenhagen, 384, 386, 421 ; accommoda- 

 tion to concentrated solutions, 140. 



Escombe, 481. 



Essential elements, 410 (sec. 73) ; amounts 

 of present in ash, 414; influence on 

 turgidity, 424 ; definition of, 296 ; func- 

 tions of, 422 (sec. 74) ; methods of in- 

 vestigation, 417-9 ; present as organic 

 compounds, 423, 424. 



Etard, 316. 



Ethereal oils, 500. 



Ethyl-alcohol, nutritive value of, for fungi, 

 384 ; production of, by yeast and bac- 

 teria, 555-7; by fruits, 557. 



Ethylamine, 383. 



Etiolin, 304, 305, 316. 



Etiolin corpuscles, power of photosynthesis 



in, 333- 

 Eucladium verticillatnm, 132. 



Euglena^ 320. 



Euphorbia, starch in latex of, 582 ; E. 

 cyparissias, 2$. 



Euphrasia, 366, 369 ; E. ojficinalis, 306. 



Euonymus, dulcite in, 477. 



Eurotium repens, 421. 



Evaporation, from leaf and from water, 240. 



Evolution of oxygen, 310, Figs. 41, 42. 



Ewart, 1 86, 195, 238, 298, 304-7, 312, 313, 

 319-24, 330, 333-6, 341, 349, 358, 524, 

 570; chlorophyll in purple bacteria, 

 308 ; conditions for formation of root 

 hairs, 156; etiolin as an assimilatory 

 pigment, 303 ; evolution of oxygen 

 from coloured bacteria, 307 ; - - from 

 green fruits, 521 ; - - through cuticle, 

 117; function of erythrophyll, 495; 

 growth of red bacteria in absence of 

 oxygen, 540 ; influence of accumulation 

 of the products on photosynthesis, 322 ; 

 - of anaesthetics, 339 ; of age, 359 ; 

 -of starvation, 593 ; of temperature, 

 327 ; -- of oil on resistance to desicca- 

 tion, 595 ; - - of sugar on production of 

 erythrophyll, 496 ; on methods, 340 ; 

 minimal temperature for photosyn- 

 thesis, 338 ; percentage of water in 

 seeds, 565 ; photosynthesis in isolated 

 chloroplastids, 5 1 ; occlusion of oxygen 

 by pigment-bacteria, 546; resistance 

 to desiccation, 84 ; rapidity of revival 

 from, 158 ; respiration in pigment bac- 

 teria, 522 ; -- in plants injured by frost, 

 566. 



Excreta, definition of, 445. 



Excretion, of nectar, influence of external 

 conditions on, 285 ; causes and me- 

 chanism of, 129, 282, 283 ; of water, in- 

 fluence of chemical stimuli on, 270, 271 ; 

 from uninjured plants, 272 (sec. 47) ; 

 from water-pores, 279 ; causes of, 280. 



Exner, 187. 



Exosmosis, 99. 



Expiration, 526. 



Exudation of water, 268 (sec. 46), Fig. 36. 

 - pressure, intensity of, 259; definition 

 of, 254 ; influence of injuries on, 260, 

 261. 



Faba vulgar is, 525. 

 Facultative anaerobes, 532. 

 Fagus sylvatica, mycorhiza on roots of, 372, 

 Fig. 55- 



