[ 1000 ] 
may be obtain d from the mafTe of blood in human bo- 
dys; this Liquor isoffuch a Nature that if a Glafs Vi- 
ol about half filled with it be kept well ftopt, the red Li- 
quor will reft as quietly as any ordinary one, without 
fendmg up any Smoak. But if the Viol be unttopt fo that 
the externaLALir be permitted to come in,within a quarter 
ol a Minute or lefs there will be elevated a, copious white 
Smoak, which will not only fill the upper part of the 
Glals, but plentifully pals out into the open Air, till the 
Viol be again flopped. And a little after he addes 
If the unttopt Viol v/ere plac'd in our Vacuum, it would 
not emit any vifible Steams at all, nor fo much as ap- 
pear in the upper part of the Giafs its felf that held the 
Liquor 5 whereas when the Air was by degrees reftor'd 
at the ftop-cock, the returning Air would prefently raife 
the Fumes firft into the vacant part of the Viol, whence 
they would afcend into the Capacity of the Receiver; 
and likewile when the Air that was requifire to lupport 
them was Pumped out, they alfo accompanied it as 
their unplealant fmell evinced, and the red Spirit, tho* 
it remain'd unftopped, emitted no more fumes, till the 
new Air was let in again ; fo far He. Such you fee was 
the proportion between the gravity oi the Vapours of 
this red Liquor and the Air, that the Air being in its 
ordinary degree of gravity thefe Vapours did afcend; 
but the Air s gravity being much lefTened in the Receiver 
by the Pumping out a great deal of it,and fo expanding 
thefprings of the reft, it was notable to elevate thofe 
Vapours. 
Thus, Sir, in obedience to your Commands, I have 
fcribled over my thoughts about this matter, and you 
fee how neceffarie it is for eftablifliing a Theory of the 
weather, to have a more Univer{al correfpondence in 
obferving joyntly the Various changes of the weather in 
difkant places ; thfcdTeveral quarters of the Wind, their, 
lirength, the time of their rife and continuance j the va^ 
rious 
