CONTENTS. 



PART I.— BOTANY. 

 CHAPTER L— PRINCIPAL GROUPS OF PLANTS. 



PAGE 



Introductory - i 



Thallophytes 8 



Algs 8 



Fungi i6 



Archegoniates • 44 



Bryophytes 45 



HepaticK (Liverworts) Si 



Musci (Mosses) S3 



Pteridophytes 55 



Filicales (Ferns) 57 



Equisetales (Horsetiils) . .^ 64 



Lycopodiales (Club Mosses) 66 



Spermophytes ( Seed Plants) 70 



Gymnosperms • ^ 71 



Angiosperms 81 



CHAPTER II.— OUTER MORPHOLOGY OF ANGIOSPERMS. 



Introductory 91 



The Root 92 



The Stem 100 



The Leaf 106 



The Flower 121 



The Fruit 14S 



The Seed 151 



CHAPTER III.— INNER MORPHOLOGY OF THE HIGHER 



PLANTS. 



Cell and Cell-Contents 156 



The Cell Wall 181 



Kinds of Cells 184 



Inner Structure of Members or Organs 197 



Plant Metabolism 219 



V 



