INDEX. 369 



PAGE 



Fruit-trees, upon the beneficial effects of protecting their stems from frost in 



early spring ( . . .286 



, observations on the proper management of those intended to be 



forced very early in the ensuing season 228 



, cause of their blossoms becoming abortive in forcing-houses . . 214 



, upon the causes of the premature death of parts of their branches . 336 



in pots, upon their management ....... 254 



Fruits, experiments respecting the circulation of sap within them ... 88 



, their organisation 89 



, green, absorb carbon 224 



of evergreen species of plants only are nourished in winter . . . 170 



, their growth and flavour injured by defoliation 170 



, points on which their improvement depends 172 



, observations on the means of producing new and early ones . . .172 



, means of obtaining new varieties of . . . . . . . 177 



, their ripening 226 



, on the means of prolonging the duration of valuable varieties of . . 323 



of the melon, derives substance from remotely situated leaves . . 269 



Fruit-stalks have a similar organisation to the branch from which they proceed 88 



Frost, mode of its action in bursting trees 27 



Fungi, parasitical, supposed to enter by the roots of trees . . . . 206 



GEBMEN, experiments relative to its direction 124 



elongates by a general distension of its parts . . . . . 127 



Glass, white, preferable to green for plant-houses 266 



Grafting of trees, observations on 81 



of old pear-trees 202 



the vine 258 



on leaf and fruit-stalks 101 



on leaf-stalks . 191 



Grain of wood ........... 25.91 



Grape, Burgundy 176 



, Chasselas . 176, 255 



, Red Frontignan . . . 176 



,Verdelho 255 



, Sweetwater .... ....... 176 



Grapes, experiments on grafting bunches of, on leaf-stalks . . . .109 



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



, formation of the bunches of 227 



, cause of their shrivelling 216 



. stalks withering 216 



Gravitation, its effects on the descent of sap 97, 93 



the most active cause of motion in the descending fluids . .101 



, its agency in the descent of the sap 107 



the principal cause of the radicle and germen proceeding in 



opposite directions ... 126 



p R 



