Vegetable Statich . 6 r 
rious Gardiners about London have agreed 
to make ufe of Thermometers of this fort; 
which are made by Mr. John Fowler in 
Swithins- Alley , near the Royal-Exchange ; 
which have the names of the following 
plants, oppofite to their refpedive moft 
kindly degrees of heat; which in my Ther- 
mometers anfwer nearly to the following de- 
grees of heat above the freezing point, viz. 
Melon-thiftle 3 i* Ananas 29, Piamento2<5, 
Euphorbium 24, Cereus2i-^, Aloe 19, In- 
dian-fig 1 64, Ficoides 14, Oranges 12, Myr- 
tles 9. 
Mr. Boyle , by placing a Thermometer in 
a cave which was cut flrait into the bot- 
tom of a cliff, fronting the Sea, to the depth 
of 1 30 feet, found the fpirit flood, both in 
winter and fummer, at a fmall divifion a- 
bove temperate; the cave had 80 feet depth 
of earth above it. Boyle s Works, Vol. Ill, 
p. 54- 
I marked my fix Thermometers numeri- 
cally, 1, 2, 3, 4, 5, 6. The Thermometer 
numb. 1, which was fhorteft, I placed with 
a South afped, in the open air; the ball 
of numb. 2, I fet two inches under ground; 
that of numb. 3, four inches under ground; 
numb, 4, 8 inches; numb. t6 inches; and 
numb. 
