PREFACE. IX 



Finally, the work is concluded by an exposition of 

 what is called Morphology ; a subject which is in 

 the vegetable, what Comparative Anatomy is in the 

 animal kingdom, and which is by far the most im- 

 portant branch of study after Elementary Anatomy 

 and Vegetable Physiology. Organography itself is 

 in all respects an exposition of the doctrines of Mor- 

 phology ; but the novelty of the subject, and a per- 

 suasion that it would be better understood if treated 

 separately, has induced me to make it the subject of 

 particular consideration. Unknown before the time 

 of Linnaeus, and first placed in its true light by the 

 venerable poet Gothe, it lay neglected for nearly 

 thirty years, until, having been revived by Du Petit 

 Thouars, De Candolle, Brown, and others, it has 

 come to be considered the basis of all scientific 

 knowledge of vegetable structure. 



It has been my wish to bring every subject that I 

 have introduced down, as nearly as possible, to the 

 state in which it is found at the present day. And 

 I have in reality added a very considerable quantity 

 of new matter to the present edition, which has passed 

 so rapidly through the press, that it may be considered 

 an exposition of the state of Botany up to Christmas 

 1834', and in some respects up to the present day. 



In the statements I have made, I have uniformly 

 endeavoured to render due credit to all persons for 

 tb.e discoveries by which they may severally have 

 contributed to the advancement of the science ; and 

 if I have on any occasion either omitted to do so, or 

 assumed to myself observations which belong to 

 others, it has been unknowingly or inadvertently. It 

 is, however, impracticable, and if practicable it would 

 not be worth while, to remember upon all occasions 

 from what particular sources information may have 



