( *7« ) 
per ate Air = 1 8. Greatefi Heat of Sun (hine in the fear 
1714=74. And now this Tear 1717, it is at 76. 
The common Heat of the Moon-Sun in July =70. Air 
in the Shade at the fame time^ 38. The Heat in ^ 
May June, the fitteft for Plants^^from 17 to 7^0 Deg. 
Autumnal Heat = from \o to lo- A hot Bed^ too hot 
for Plants, and about the Heat of Blood in Fevers =75'. 
Vue Heat of a hot -Bed ^6. Heat under a Glafs at 
the fame time = 34 ; and in the open Air =17. 
Thermometers of this kind are now made by John 
Fowler in Swithins Alley near the Royal Exchange, 
which have the Names of the following Plants, oppo- 
fitc to their rerpedtive moft kindly Degrees of Heat, 
viz. Melon- 7 hifile =‘^1, Ananas =19, Fiemento=z6y 
Euphorbium =14., Cereus Aloes Indian 
Fig = 167, Ficoides = 14, Oranges = 1 1, Myrtles 
= 9. 
He obferv*d the Air to be cooler than the Earth out 
of the Sun, but hotter in Sunlhine ; and that as foon 
as the Heat of the Sun is fo far decreas’d, as no longer 
to give a brisk Agitation to (or turn into SteamJ the 
Moifture of the Earth, the Leaves of the Plants 
fall off. 
\ 
N tt z 
CHAP. 
