6o Vegetahle Statich. 
The hotteft Sun-fhine in the year 1724^ 
gave to the Thermometer^ expofed to it, a 
heat equal to that of the blood of animals, 
*viz>, 64 degrees : And tho' plants endure 
this and a confiderably greater heat, with- 
in the tropicks, for fome hours each day, 
yet the then hanging of the leaves of ma- 
ny of them (hews that they could not long 
fubfift under it , were they not frequently 
refrelhed by the fucceeding evening and 
night.' 
The common noon-tide heat in the Sun 
in July is about 50 degrees: The heat of 
the air in the fhade in July is at a medium 
38 degrees. The May and June heat is, 
from 17 to 30 degrees 5 the moft genial 
heat, for the generality of plants, in which 
they fiourilh moft, and make the greateft 
progrefs in their growth. The autumnal 
and vernal heat may be reckoned from 10 
to 20 degrees. The winter heat from the 
freezing point to 10 degrees. 
The fcorching heat of a hot bed of horfe- 
dung, when too hot for plants, is 75 de- 
grees and more, and hereabout is proba- 
bly the heat of blood in high fevers. 
The 
