34 ^ Of Ve get at ton* 
We may plainly fee the influence of the 
SuiVs 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 
deferibed 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, fince the early morning, from 21 
1048 degrees 5 then the fpirit in the fecond 
Thermometer^ whofe ball was two inches 
under ground, was at 45 degrees, and the 
3d, 4th, and 5th were gradu- 
ally of lefs and lefs degrees of heat, as they 
were placed lower in the ground to the fixth 
Thermometery which was two feet under 
ground, in which the fpirit was 3 1 degrees 
high. In this ftate of heat on all the parts 
of the vegetable, we fee the Sun muft have 
a very confidcrable influence in expanding 
the fap in all its parts. The warmth was 
much greater on the body above ground, 
than on the roots which were two feet deep 3 
U^ofe roots, and parts of roots which are 
deepeftj 
