TABLE OF CONTENTS. 



CHAPTER V. 

 RELATIONSHIP AMONGST PLANTS. 



Characters of importance in proving relationship. Primary 

 Divisions of the Vegetable Kingdom. Natural Orders of 

 Plants. What is a Species ? .... pp. 158 185 



CHAPTER VI. 



FOSSIL PLANTS. 



Vegetation of early Geological Periods. Disappearance of 

 groups of Plants. The Evolution of Plants corroborated by 

 Geological evidence ..... pp. 186 192 



CHAPTER VII. 

 GEOGRAPHICAL DISTRIBUTION OF PLANTS. 



Principal factors influencing the Distribution of Plants. 

 British Flora, past and present. Distribution of Cryptogams. 

 Distribution of Phanerogams . . . . pp. 193 206 



INDEX 



207 



