List of Illustrations. 



The mark *** which appears in the list designates the plates that are pro- 

 duced in colour. The number of the page given for each of these coloured 

 plates is that of the printed page faced by the coloured plate in each case. 



TLATE. 



I. SEEDS AND EMBRYOS. 



II. MAPLE PLANTLET. 



III. SECTION OF WOOD. 



IV. PINE SEEDLING. 

 V. BUDS. ..... 



VI. OAK SEEDLING. 



VII. GREAT-FLOWERED MAGNOLIA. Magnolia fcetida, 

 VIII. SMALL MAGNOLIA. Magnolia Virginiana, 



IX. 80URGUM. Nysta sylvatica, 



X. WATER TUPELO. Nyssa biflora, . 



XI. BLACK ALDER. &* verticillata, . 



XII. WILD YELLOW PLUM. Prunut Americana, 

 XIII. BUTTON-WOOD. Platanus occidentalism 

 XIV- RIVER BIRCH. Bttula nigra, 



XV. 8MOOTH ALDER. Alnusrugesa, . 



XVI. AMERICAN HORNBEAM. Car/t'nus Caroliniana, 



XVII. BLACK WILLOW. Salix nigra, 



XVIII. WESTERN BLACK WILLOW, Salix amygdaloidet, 



XIX. SHINING WILLOW. Salix lucida, . 



XX. BEBB'S WILLOW. Salix Bebbiana, 



XXI. 8ILKY WILLOW. Salix sericea, 



XXII. WEEPING WILLOW. Salix Babylonica, 



XXIII. YELLOW WILLOW. Salix alba vitellina, 



XXIV. BRITTLE WILLOW. Salix fragility 



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