X PREFACE. 



the general structure of plants of the present day. I have 

 not, therefore, hesitated to use the ordinary Botanical terms 

 without explanation. I am satisfied that no one can study 

 Fossil Botany properly unless he has studied Modern Botany. 

 Those readers who may find any difficulty as to technical 

 terms I would refer to my Botanist's Companion, where a 

 full Glossary is given. 



27 Inveeleith Row, 



May 1872. 



