Vegetable Statich . 
July 30. I began to keep a rcgifter of 
their rife and fall. During the following 
month of Auguft, I obferved that when 
the fpirit in the Thermometer numb* r, 
(which was expofed to the Sun) was about 
noon rifen to 48 degrees, then the fecond 
Thermometer was 45 degrees, the .fifth 3 3* 
and the fixth 3 1 5 the third and fourth at 
intermediate degrees. The fifth and iixth 
Thermometer kept nearly the fame degree 
of heat both night and day, till towards 
the latter end of the month; when as the 
days grew fhorter and cooler, and the nights 
longer and cooler, they then fell to 25 and 
27 degrees. 
Now, fo confiderable a heat of the Sun, 
at two feet depth, under the earth's furface, 
muft needs have a ftrong influence in raif- 
ing the moifture at that and greater depths % 
whereby a very great and continual wreak 
muft always beafcending, during the warm 
fummer feafon, by night as well as day ; for 
the heat at two feet depth is nearly the fame 
night and day: The impulfe of the Sun- 
beams giving the moifture of the earth a 
brisk undulating motion, which watery par- 
ticles, when feparated and'rarified by heat, 
do afcend in the form of vapour ; And the 
z 
vigour 
