INTRODUCTION. 
W E have feen how Plants are formed ; and w6 
may now proceed to enquire into the Manner 
wherein they are nouriihed : the Strudure and the true 
Courfe of their juices being known, it remains only that 
we examine what thofe Juices originally are, whence 
they are deduced, and by what Powers they are conveyed 
into the Vegetable Organs. 
Thefe Refources and thefe Powers are to be fought 
among the Elements. 
This Enquiry will (hew the Dependance and Analogy 
there is between the vaft conftituent Parts of this our 
Syftem, and thofe leffer Objeds which are their Produc- 
tions ; It will give us the juft Connedion between natural 
Philofophy and natural Hiftoryj and fhew that there is no 
Part of the Creation disjoined from the reft, but all con*- 
neded and dependent; the whole one vaft, unbroken, 
and uninterrupted Chain, the imagined Diviftons of which 
have no Foundation but in our imperfed Knowledge. 
From this general view of the Vegetable World, we 
fhall be led regularly to the diftind Forms and Situations 
of the feveral Parts of Plants ; on which the greater and 
lefie 
