Of Vegetation . 347 
to thefe powers, that they uniformly concur 
to the production and perfection of natural 
Beings 5 whereas were fuch powers under no 
guidance, they mu ft neceffarily produce a 
Chaos , inftead of that regular and beautiful 
fyftem of nature which we fee. 
We may plainly fee the influence of the 
Sun's warmth in expanding the fap in all 
the parts of vegetables, as well in the roots 
as the body that is above ground, by the 
influence it has on the fix Thermometers 
defcribed under Experiment 20, five of which 
were fixed at different depths from two in- 
ches, to two feet under ground, the other 
being expofed to the open air. 
When in the greateft noon tide heat the 
fpirit of that which was expofed to the Sun 
was rifen, flnce the early morning, from 21 
to 48 degrees $ then the fpirit in the fecond 
Thermometer , whofe ball was two inches 
under ground, was at 45 degrees, and the 
3d, 4th, and 5th Thermometers were gradu- 
ally of lefs and lefs degrees of heat, as they 
were placed lower in the ground to the fixth 
Thermometer , which was two feet under 
ground, in which the fpirit was 31 degrees 
high. In this ftate of heat on ail the parts 
pf the vegetable, we fee the Sun muft have 
a very 
