via PKEFACE. 
able vegetable productions ; a few are noticed on 
account of their importance as commercial com- 
modities ; and, to extend the interest in this de- 
lightful study beyond mere nomenclature, short 
details of the natural history of particular plants, 
in which peculiarities of structure or habits ap- 
pear, are added. 
In acquiring a knowledge of Botany with the 
help of this Treatise, the Author recommends to 
the student to familiarize himself with the descrip- 
tions and references to the figures in the intro- 
ductory part, and at the same time not to neglect 
■what assistance he can command from practical 
botanists, in procuring the names of such plants as 
are described in the following pages. Attention 
to the latter hint will greatly facilitate his la- 
bours. 
Those who wish to extend their knowledge of 
the structure and functions of fdants, may con- 
sult with advantage, Senehier, Physiologie Vegetales 
Mirbel on the same subject ; Smith’s Introduction 
