INDEX 



335 



Dogwood 13, 20, 25, 28, 29, 37, 



59, 89, 118, 196 

 Dormant bulbs 141 

 Dorsi-ventral structure 147 

 Doubly serrate margin 252 

 Douglas Fir 24, 29, 316, 318 

 Downy Kose 173 

 Downy surface 37, 192, 288 

 Dractena 9 



Drainage system 33, 80 

 Drawn leaves 129, 134 

 Drip-tips 108, 121 

 Drooping leaf 87, 105 

 Druse ni 117 



Drought 139, 142, 144, 146 

 Dry climate 144, 147 

 Dry season 145 

 Dry weight 128, 129, 130 

 Dry winds 145 

 Dwarf Birch 261 

 Dwarf creeper 290 

 Dwarf Furze 299 

 Dwarf plant 250, 279, 288 

 Dwarf shoots 8, 243, 274, 276, 290, 



305, 308 

 Dwarf Willow 281 



Eared Willow 257 



Efferent vessels 80, 83, 84, 85, 95 



Eglandular petioles 172, 178, 277 



Eglautine 172 



Elder 7, 13, 17, 21, 29, 45, 59, 



81, 87, 105, 106, 153, 161 

 Elder-pith 67 

 Eleagnus 37, 295 

 Electric light and leaves 113 

 Elettaria 34 



Elliptical leaf, 22, 25, 26 

 Elliptic-ovate leaf 26 

 Elm 4, 5, 12, 13, 19, 20, 21, 25, 



26, 29, 30, 34, 35, 52, 53, 56, 



89, 106, 110, 119-121, 141, 238- 



210 

 Elodea 132, 133 

 E. canadensis 7 

 Embryonic cell 67, 75-77 

 Empetrum 13, 145 

 E. nigrum 192 

 Enclosures of cell 7 1 

 Endodermis 308, 313, 316 

 Endosperm 130 

 Energy 93, 95, 96 



Energy absorbed 135 

 Energy of assimilation 133 

 Energy of respiration 127 

 Entire leaf 18, 27, 28, 38, 177, 190, 



284, 302 

 Enzymes 72 

 Epacrideaz 145 

 Epidermal cells 101, 104 

 Epidermis 79, 81, 82, 86-90, 97, 



98, 101, 102, 146 

 Equipment of adaptation 141 

 Equisetum 8, 146, 147 

 Erect leaves 146, 148 

 Erica 191, 192 

 E. camea 13, 24, 192 

 E. ciliaris 13, 192 

 E. cinerea 13, 191 

 E. tetralix 13, 192 

 E. vaaans 13, 24, 192 

 Ericaceae 101, 145 

 Ericoid type 305 

 Ether 127 



Etiolated leaves 110, 126, 129 

 Eucalyptus 114, 147 

 Euonymus euroj)ceus 180, 181, 190 

 Euphorbia 7 



Evaporation 96, 122-124 

 Evergreen leaves 105, 123, 140, 



145, 151, 161, 162 

 Evergreens 186, 190, 192, 193, 194, 



216, 232, 249, 297, 299, 307, 



308, 313 

 Evolution of oxygen 96, 128, 135 

 Excessive illumiuation 147, 148 

 Excessive transpiration 143, 145 

 Exchanges of water, &c. 83, 96 

 Exigencies of the environment 143 

 Expansion of leaf 122 

 Experiences in the labyrinths ! 1- 



96, 101 

 Experiments 123, 125-127, 128, 



130, 131, 132, 134, 136 

 Explosions 92 



Exposure of leaf-surface 9, 12, 134 

 Exposure to light 118, 142 

 Exstipulate leaf 20, 151, 154, 157, 



161, 175, 180, 205, 216, 281, 



294 

 External conditions 111, 139 

 External stimuli 104 

 Extremes of environment 143 

 Exudation of water 106 



