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 
the 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 
