BOOK I. 
O N T H E 
EFFECTS 
OF THE 
ELEMENTS and SEASONS 
UPON 
VEGETABLE BODIES. 
CHAP. I. 
The Effects of Heat, or Fire, on Vegetables. 
H e A T is neceffary in fome degree to all Plants j and in va- 
rious proportions to the different kinds : but it is the fame 
from whatfoever fource they receive it. The Plant will 
thrive if the air have a due warmth, whether that be occafioned 
by the fun, or a common fire. ‘Tis hence our ffoves fupport the 
Vegetables of the hotteff climates. 
Those which are natives of colder regions require lefs Pleat; but 
fome portion of this aduating Element is of abfolute neceffity to all : 
without it the Juices would be frozen; and vegetative Life would 
ceafe. ‘Tis therefore Heat has been called, in the modern meta- 
phoric language, the Heart of Plants : it keeps the Juices fluid, 
and by the expanfion and contraction of the parts, according to its 
various degrees, is the great caufe that puts them firff in motion. 
Therefore the more warmth there is in any place, the finer Plants 
VoL. II. B Ihould 
