CONTENTS 



XVII. Lessons with Plants 299 



Germination studies. Root function. Biennials. Stem 

 structure and function. Tree trunks. Propagation 

 stems. Buds. Leaves and their functions — transpira- 

 tion and starch-making. Modified leaves. The flower 

 and its function. Pollination. Types of flowers. How 

 to study the whole plant. Movements of plants. Seed 

 dispersal. Grasses and cereals. Useful plants. 



XVIII. Trees . 358 



Growth and life of a tree. Stem structure. Foliage. 

 Autumn coloration and leaf-fall. Flowers and fruit. 

 Conditions determining forest distribution. Forest con- 

 ditions. Influences and uses of forests. Destructive 

 agencies. Arbor Day — purpose, programmes. Beau- 

 tification of school-grounds. Tree-planting. 



XIX. Flowerless Plants 388 



Fern, Equisetum, moss, liverwort, lichen, and mushrooms. 



PART III 

 Graded Course of Nature-Stxtoy 399 



APPENDIX 

 Reference Books and Nature Readers . . . .511 



Index . 539 



