IV CONTENTS. 



Page 

 BULBS 



Root buds of the tulip . . . .11 



Bulbs mistaken for roots . . , .12 



Bulbs similar to buds . . . ib. 



Stalk-bulbs in the tiger- lily . . . ,13 



Bulbs ? in ferns, mosses, and lichens . . ib. 



STEMS . . . . . .13 



Character of stems . . . 14 



Varieties in stems . . . . ib. 



Distinction of plants by their stems into trees, shrubs, 



herbs, and palms . . . 15 



BUDS 



Popular meaning of budding . . . ib. 



Forms of buds . . . ib. 



Leaf- buds and flower-buds . . . .16 



Flowers rolled up in their buds . . 17 



Buds of grasses . . . . .18 



Buds of the oak and the horse- chestnut . 19 



Providence of bud-eating birds and insects . . 20 



Bonnet's arrangement of buds . . . ib. 



Darwin's fancy about buds . . . ib. 



Budding or bud grafting . . . ib. 



LEAVES 



Their office similar to that of lungs . . .21 



Parts of a leaf . . ib. 



The leaf-stalk . . . . ib. 



The terms Nerves and Veins objectionable . . 22 



Leaf-ribs and riblets . . . . ib. 



Varieties of leaf-ribs . . ib. 



Dr. Drummond's arrangement . . .23 



Professor Lindley's arrangement . ib. 



Expansion of the mid-rib a guide . . . ib. 



Simple Leaves 



Variety in form . . . ib. 

 Branchings of the mid-rib .... ib. 



Compound Leaves 



Variety in form . . . 2/ 



Winged leaves . . . . .28 



Doubly winged leaves . . . 29 



Circumference of Leaves 



Varieties in the tip . . . . . 30 



Varieties in the margin . . . 31 



Borderings of the margin . . . .32 



Insertion and Direction of Leaves . . 33 



With relation to the stem or branch . . . ib. 



With relation to their distribution . . . ib. 



With respect to direction . . . . ib. 



With respect to duration . . 34 



Leaf, flower, and fruit scales . . . ib. 



The leaf-scale . . . . ib. 



The floral leaf . . . . ib 



