14 Vegetable Statich . 
Since then a plentiful perfpiration is 
found fo neceflary for the health of a plant 
or tree, 'tis probable that many of their dis- 
tempers are owing to a ftoppage of this per- 
fpiration, by inclement air. 
The perfpiration in men is often flopped 
to a fatal degree ; not only by the inclemen- 
cy of the air, but by intemperance, and vio- 
lent heats and colds. But the more tempe- 
rate vegetable’s perfpiration can be flopped 
only by inclement air; unlefs by an un- 
kindly foil, or want of genial moifture it is 
deprived of proper or fufficient nourifliment. 
As Dr. Keill obferved in himfelf a con- 
fiderable latitude of degrees of healthy per- 
fpiration, from a pound and half to 3 pounds; 
I have alfo obferved, a healthy latitude of 
perfpiration in this Sunflower, from 16 to 
28 ounces, in twelve hours day. The more 
it was watered, the more plentifully it per- 
fpired, {ceteris paribus ) and with fcanty 
watering the perfpiration much abated. 
Experiment II. 
from July 3 d. to Aug, 3 d. I weighed 
for nine feveral mornings and evenings a 
middle 
