INDEX TO ILLUSTRATIONS. 



Page 



The Lime tree . . .1 



Leaf and flowers of ditto . 2 



American Lime . . .11 



View in tlie Scottish Highlands 13 



The Sycamore . . .14 



Leaf of ditto, reduced . 1 5 



Cotyledons of ditto . .21 



The Norway Maple . . 23 



Leaf, flowers, and seed of ditto 26 



The Common Maple . . 27 



Leaf, flowers, and seed of ditto 30 



The Horse-chesnut . . 31 



Flowers of ditto, reduced . 35 



Leaf of ditto, reduced . . 36 



The Holly .... 37 



Leaves and flowers of ditto 47 



The False Acacia . . .48 



Leaf of ditto . . . 57 



The Wild Cherry, or Gean . 58 



Manner in which the branches 



are arranged . . .61 

 Flowers and leaves of ditto 63 



Leaves and fruit of ditto . 64 

 The White Thorn . . .67 

 Leaves and fruit of ditto . 72 

 Leaves and flowers of ditto . 74 

 Moth, chrysalis, and caterpillar 

 of Episema ccerideocepliala . 75 

 The Mountain Ash . . 76 

 Leaves and fruit of ditto, re- 

 duced, and also of the natural 

 size . . . . .80 

 Leaf of the White Beam Tree 81 

 Fruit of ditto . . .82 



Missel-thrush eating the berries 

 of the Mountain Ash . 83 

 The Ash . . . .84 



Drooping variety near Mitford 



Castle .... 86 

 The scale insect magnified, and 



of the natural size . .98 

 Hylesinus fraxini of the natural 

 size and magnified, with the 

 galleries excavated by it in 

 the bark . . . .100 

 Leaf of the Ash reduced . 101 

 The English Elm . . . 1 04 

 Spray of ditto . . .105 

 Leaf of ditto . . .106 



The Cork-barked Elm . 117 

 Leaf of ditto, reduced . .119 

 Leaf of Ubnus major reduced 123 





Page 



The Scotch Elm 



124 



Leaf of ditto 



126 



Flowers of ditto 



127 



Avenue at Hampton Court . 



133 



The Smooth-leaved Elm 



134 



The Huntingdon or Chiches- 





ter Elm 



136 



Leaf of ditto, reduced 



138 



The Walnut 



139 



Flute method of budding 



146 



Flowers .... 



148 



Bird caught in a snare . . 



151 



The Crack Willow 



152 



Leaf of ditto 



155 



The Bedford Willow 



156 



Leaf of ditto 



157 



White Willow . 



160 



Leaf of ditto . 



161 



Catkins of ditto reduced 



162 



Moth, chrysalis, and caterpillar, 





of Smerinthus popuU 



166 



The Large-leaved Sallow 



167 



Leaf of ditto, reduced 



168 



Male catkins of ditto, reduced 



168 



Female catkins and an ovary oi 





ditto, reduced 



169 



Leaves of ditto, reduced 



169 



Landscape . . . . 



172 



The Grey Poplar 



175 



Leaf of ditto 



176 



Spray of ditto 



177 



The Abele . . . . 



181 



Leaf of ditto 



183 



The Aspen . 



184 



Leaf of ditto 



185 



Female catkins of ditto . 



188 



Flowret of ditto, magnified . 



189 



Aspen on the Lady's Islet, 





Loch Katrine 



189 



The Athenian Poplar . 



190 



Catkins of ditto . 



191 



Spray of ditto, reduced . 



191 



Leaf of ditto 



192 



Landscape vignette 



193 



The Black Poplar 



194 



The Black Italian Poplar . 



198 



Leaf of ditto, reduced . 



199 



Female catkins of ditto, reducec 



203 



The Lombardy Poplar 



204 



Leaf of ditto 



205 



Lombardy Poplar near Perth 





Bridge . 



209 



