PREFACE TO REVISED EDITION. 



The re-arrangement of the course of study in Botany for 

 Teachers' Certificates and for Junior Matriculation has 

 afforded an opportunity for revising and, it is hoped, improv- 

 ing the present text-book, to which so kind a reception was 

 accorded on its first appearance some years ago. 



The principal feature of the new curriculum is the addition 

 of certain Cryptogamous types. These are necessarily some- 

 what more difficult of study than the Phanerogams, because 

 their characteristics cannot be satisfactorily made out without 

 employing high powers of the microscope ; but it is hoped 

 that the numerous illustrations which accompany the text, 

 and which have been gathered from various sources, will 

 materially assist the student in this part of the work. 



The chapter relating to minute structure has been re- 

 written, and, as will be seen, considerably extended. Though 

 it is still but a sketch, it is hoped that it will serve a useful 

 purpose in paving the way for the fuller study of the anatomy 

 and physiology of plants with the aid of advanced works. 



Other changes and additions have also been made, chiefly 

 in the chapter on Morphology. 



The writer need hardly add that in preparing this revision 

 he has laid under contribution the various text-books of 

 recognized merit which have come within his reach, and that 

 beyond the mere presentation of the subject he lays no claim 

 to originality. 



Barrie, August. 1887, 



