INDEX. 



313 



Errera, on curvature of Phyoomyoes 

 towards iron, 197 n. 



Esters, occurring in extracts, 224. 

 See also Oils 



Ether, effect of, on chlorophyll 

 solution, 43; use of, in extrac- 

 tion, 224, 253; use of, in pre- 

 cipitation, 266 



Etiolated plants, form of, 49 



Etiolin, change of tint produced 

 by light in, 47 



Evaporation, 228; under reduced 

 pressure, 229 ; compared with 

 transpiration, 89 



Extracts, of plant tissues, 224; 

 necessary for study of metabo- 

 lism, 220; preparation of, 224, 

 226; filtration of, 227; con- 

 centration of, under reduced 

 pressure, 228; changes occur- 

 ring in, on keeping, 229 



fats, see Oils 



Fehling's solution, 249, 264, 267, 

 269 



Fermentation, methods of estimat- 

 ing sugars based on, 262 



Ferments Unorganised, 285 ; ex- 

 traction of, 286 ; detection of, 

 in extracts, 286 ; comparing 

 activity of, 286, 289 ; filtration 

 of extracts containing, 286, 290 ; 

 experiments on, 287, 290, 291, 

 293, 302 



Ficus elastica for transpiration 

 experiments, 93 



Filter-plate, use of, 227 



Filtration, 227; use of asbestos 

 for,_ 227; through wood, 83 



Plaocidity, recovery from, under 

 mercury pressure, 82 



Florideae, colouring matter of, 46 



Flowers, opening and closing with 

 changes in temperature and illu- 

 mination, 201-203 



Formaldehyde, assimilation of, 29 



Frank, on buds of Taxus and 

 Abies, 182 n. ; on decapitation 

 of roots, 159 ; on horizontal 

 branches, 180 ; on torsion of 

 internodes, 180 



Fresenius, Qualitative and Quanti- 

 tative Analysis, 221 



Fritillaria, tensions of tissues in, 

 123 



Frost, injection of leaves by, 97 ; 

 drooping of leaves during, 163; 

 producing curvature in branches, 

 164 



Fungi, nutrition of, 60 



Gardiner, W., on printing photo- 

 graphs in starch, 21 ; his method 

 of showing root pressure, 68; 

 on tannins, 248 



Oarreau, on bloom and transpira- 

 tion, 99; his experiment on 

 stomatal transpiration, another 

 method of performing, 94 



Gas, diffusion through epidermis 

 of, 42 



Gas-analysis, Pfeffer's method used 

 in assimilation experiments, 35 



Gas-chamber, use of, 14 



Gelatine for air-tight junction of 

 leaf-stalt, 97 ; used in experi- 

 ments on contact stimulation, 

 185 



Geleznow on frost producing curva- 

 ture of branches, 164 



Geotropism, 150 ; (negative) change 

 of form accompanying, 151 

 oxygen necessary for, 153 ; re 

 corded on revolving drum, 158 

 transverse, see Diaheliotropism 



Germination of oily seeds, 8 

 method of preparing seeds for,136 



Glucosazone, 266 



Glucose, see Sugars 



Gluoosides, 256. (See also Tan- 

 nins.) 



Glycase, see Ferments 



Glycerin, 243; production of in 

 saponification of oils, 244; quali- 

 tative tests for, 245 ; estimation 

 of, 246 ; use of in extracting 

 ferments, 286 



Godlewski, on effect of excess of 

 COj on assimilation, 22 ; on 

 formation of starch being depen- 

 dent on presence of CO3, 23 n.; 

 on Hartig's experiment, 81 n. 



