QK 



VOL. I. 



CONTENTS. 



v.l 



INTRODUCTION. i 



I. THE PROTOPLAST 1 



II. THE PROTOPLAST AS HOUSE-BUILDER AND HOUSE-FURNISHER 24 



III. CELL COMMUNITIES : A CHAPIER ON TISSUES 73 



IV. THE ASCENDING SAP , 92 



V. THE DESCENDING SAP * 124 



VI. SEED AND BOOT . 160 



VII. NATURE'S WOODCRAFT : A CHAPTER ON STEMS 205 



VIII. LEAF-BEGINNINGS AND LEAF-FORMS 245 



IX. THE LEAF IN RELATION TO ITS ENVIRONMENT .... . 278 



COLOURED PLATES. 



A Beautiful Uganda Flower (Spathodea niloticti) ....... frontispiece 



Facing page 



The Rosy-lipped Cattleya (Cattleya labiata) 33 



Glory Pea (Clianthus dampieri) . . . . . . . . . . . .65 



A Pitcher-plant (Nepenthes amesiana) 97 



Western Banksia (Banksia occidentalis) 129 



Variegated Adamia (Adamia versicolor) . . . . . . . . . .161 



Scarlet Passion-flower (Tacsonia manicata) 193 



Moutan Paeony (Pceonia moutan) ........... 225 



Walker's Cattleya (Cattleya walkeriana} 256 



ILLUSTRATIONS IN THE TEXT. 



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