INDEX. 371 



PACK 



Leaves, their connexion with the roots 87 



supposed to be the principal agents of assimilation . . . . .115 



, mature, of young plants, effect of their being destroyed . . . 1 70 



elaborate the sap, which is transformed into the substance of plants . 130 



generate the substance of roots - . 153 



, the sole organs in which the true sap is generated .... 200 



, ratio in which they generate sap . . 192 



elaborate the aqueous sap . . 129 



, the organs by which the crude sap is changed 269 



perspire most when they have attained their full growth . . .149 



, different actions of mature and immature 340 



, young, their action on the air different from that of old ones . .115 



, direction of their energies in the latter part of summer . ... Ill 



, when shaded, become inefficient 321 



, detached, of plants, on their action 168 



, their efforts to turn their surface to the light ..... 93. 129 



of Mint, roots produced from 270 



Leaf-stalk 154 



, its returning vessels . . . . . . . . .102 



, grafting performed on the 101 



, bunch of Grapes grafted upon 191 



Lemon-tree, under high temperature 239 



Ligature, its effect in impeding the return of sap 221 



applied to branches 247 



Light, its effect on the stems of climbing plants 166 



Potatoes 300 



, its influence on the growth of parts exposed to it . . . .160 



and gravitation, their conflicting influences on the direction of leaves . . 306 



Lime applied for the destruction of insects 218 



Liquids, their exosmic and endosmic action 316 



Lopping, effect of 114 



Lycoperdon cancellatum, on the mode of its propagation . , . . . 217 



MAMMEA AMERICANA 240 



Mammee-tree 240 



Mangifera Indica 240 



Mango-tree 240 



Manure, from vegetable matter, on the advantages of employing it in a fresh 



state . ...... 193 



, on its application in a liquid form to plants in pots . ..211 



liquid ..... . 241 



successfully applied to a plant of Erica australis . . . 297 



Medulla . .... 86. 131. 190 



, its offices . . .94 



not necessary to the progression of sap . 88 



, experiments with regard to its functions . . .87 



BR2 



