INDEX 



551 



Extensibility of plant tissues, 521. 

 of growing plant structures, 

 362, 365. 



Fat, behaviour of, in germination, 

 308. 



determination of, 305. 

 Fatty oils, reactions of, 307. 



trees, 350. 



Fehling's solution, 249. 

 Fermentation, alcoholic, 282. 

 Filtration of gases, 176, 181. 

 Fine earth of the soil, 77. 

 Flank curvature in twining plants, 



491. 

 Food solution for bacteria, 98. 



for higher plants, 2, 3, 84. 



for Nitromonas, 70. 



for Penicillium, 93. 



for yeast, 58, 86, 96. 



Cohn's, 98. 



Pasteur's, 58. 

 Freezing, changes induced by, 125. 



death from, 123. 



chamber, 127. 



mixture, 123. 

 Fungi, parasitic, 100. 



pure cultures of, 94. 



saprophytic, 94. 



Galls, 486. 



Galvanometer, 157, 291. 

 Galvanotropism of lower organisms, 



430. 



Garden soil as a culture medium, 31. 

 Gas absorption, 161. 



chamber, 422. 



Gaseous pressure, positive and nega- 

 tive, 175. 



exchange in assimilation, 41. 

 Gases, dialysis of, 162. 



diffusion of, 161. 



nitration of, 176, 181. 



movement of, 161. 



Geotropic behaviour of grass nodes, 

 443. 



behaviour of roots, 436. 



behaviour of shoots, 441. 



nutation, causes of, 446. 

 Germination of Phaseolus, 811. 



of potatoes, 316. 



Germination of potatoes, influence 

 of illumination upon, 414. 



of Triticum, 313. 

 Globoid, 121. 

 Glucose, detection of, 300. 



estimation of, 300. 

 Glucosides, 342. 

 Glycerine, detection of, 307. 



preparation of, from vegetable 



fats, 306. 

 Granular layer of the protoplasm, 



118. 



Growing points, 372. 

 Growth and respiration, 394. 



annual period of, 401. 



conditions necessary for, 392. 



daily period of, 412. 



energy of, 387. 



grand period of, 382. 



in constant darkness, 404. 



in length, 372. 



in thickness, 375. 



influence of external conditions 

 upon, 392. 



influenced by light, 411. 



influenced by pressure and ten- 

 sion, 396. 



influenced by temperature, 398. 



intercalary zones of, 374. 



material necessary for, 392. 



rate of, 387. 



relation to quantity of water in 



the tissues, 393. 

 Gums, 332. 



Haemoscope, 25. 



Heat, conduction of, in plants, 156. 



development of, in imbibition, 

 141. 



production of, in plants, 287. 



rigor, 541. 

 Heliostat, 25. 

 Heliotropic chamber, 468. 



nutations, 467. 



nutations, transmission of 



stimulus in, 474. 

 Heliotropism and light intensity, 



472. 



Humus, 90. 

 Hyaloplasm,' 118. 

 Hydrogen, preparation of, 35. 



