368 INDEX. 



PAGE 



Comforts and luxuries, their materials only placed by jiature within the reach 



of man 172 



Cotyledons, deposition of nutriment in 115,131 



supply nourishment in a fluid state to the radicle . . .127 



, their use 189 



Coxcomb, on its cultivation . . . 250 



Crab-apple . . . . . . . . . . . . . 173 



Crab-tree, Siberian 344 



Crambe maritima, formation of buds within its fruit-stalks . . . . 120 



Cross-breeding 278 



Curl in potatoes 185, 197 



Cuttings, inverted 107 



DAUCUS carota, experiments made relative to the extension of its roots in 



different soils 159 



Decortication 100 



or ringing, physiological observations upon its effects on fruit-trees 246 



employed to facilitate the emission of roots .... 196 



of trees previous to felling . . . . . . . 136 



Defoliation, its effect on the growth and ripening of fruit . . . .170 



Disbudding ... 200 



Disease in plants induced by over-stimulating them . . . . .178 



Dry air in forcing-houses, its injurious effects 305 



Dry-rot 204 



ELECTRICITY, its effect on plants 35,36 



Erica australis . . . . ... . . . . . 297 



Exosmic and endosmic action of fluids . . . . . . . . 316 



Evergreen species only nourish their fruit in winter . . . . 170, 341 



FARINA of plants, one of the substances carried by bees . . . . 353 



Female parent, character of, prevalent in cross-bred plants . . . .177 

 Fern, in a green state, employed as a manure .... 194,197 



Fig-tree, distinction between its true and aqueous sap vessels evident . .117 



, effect of high temperature upon 239 



, upon its culture in the stove . . . . . . . . 248 



Fig, account of a method of obtaining very early crops of .... 288 



, white Marseilles .... 289 



Blanche . . ..... . ... . . . 289 



Fishes . ... . 357 



Fluids in plants, their first direction . 117 



Forcing-house, description of one for grapes . ....... .179 



Forcing-houses for fruits, best mode of constructing them . . . . 179 



-, on their ventilation 224 



Fraxinus excelsior . . . . . . . . . . . 146 



Fruit-trees, periods which different kinds require to attain puberty . .178 



