noon (fan. 1 8 h)and continued(with us) till about y. of the Clock 
In the afternoon of that day, Jan, 1 9. with fame fiercenefs) and 
the weather, 19. being in themorning 5 clofe ; and cloudy all 
the day, with little of Sum Shine j the Liquor in the Tbermofcops 
was very little raifed,by 4. of the Clock afternoon, that is, but 
h of an inch (which/had the Sun Shone, would, it’s likely, have 
been near an Inch : ) and after that time(or fomewhat before) 
had there been no considerable change of weather, it would 
upon the Sun’s fetting have fallen (and probably fo it did, till a- 
bout 5-. of the Clock, though I took no Obfervation in the in- 
terim. ) But, contrary to what would have been expe&ed, it was 
at 9. of the Clock at night, higher by f- of an inch, thanithad 
b en at 4* occasioned by the change of weather, the Froft 
Suddenly breaking, with us, between p, and 6, of the Clock j a- 
bout which time alfo it began to rain, and continued' raining 
that Evening and good part of the N ight. And the next morn- 
ing I found the Liquor yet higher by half an inch, vid. 1 ; fin- 
ches ; (by reafon of the Air that night being fo much warmer, 
than it had been the day before ; ) whereas commonly it is con- 
siderably lower in the morning, than overnight. 
As to the Bare [cope, for the Weight or Preffure of the Air ; I 
find, that for the 1 1 , 1 Vi 3, 1 4, i- y , 1 <Mnd 1 7. dayes, the Met - 
tury in the Tube, was (by the balancing Preffure of the incum- 
bent Air on the Stagnant QuickSiIver,expofed to it) kept up to 
the height of near 30. Inches above the Surface of the External 
Qu i ck h 1 v e r , ( t h o n g h with fome little variation's 30, 2 9 Jj, 29%, 
29 % but never fo low,all that time, as 29 Js) which is the "threat- 
eft height I have know it at, (for I do not find, that I haveever, 
till then, obfervedit to be, in my G 3 aiTe$,full 30. Inches, though 
it have been very near it: the Weather having been almoft 
continually Foggy, or very thick Miffs, all that time, fammry 1 8. 
itcamedownto 29 J, in the forenoon * and af ernoon to spe. 
about the time the froft began : And fan. 19. it was, at 8. in the 
morning, comedown to 29 ~ ; at 4. in the afternoon, to 29 
But at 9. in the evening(when the Earth quake had intervened) 
it was rifen half an inch^vid. to 29 } And, by the next mornirg, 
fallen again a whole inch , vid to 2 8 }s which fall I attribute (at 
leaft in part) to the rain that fell in the night. 
This being what I obferved out of my B^eyijler of the fe In- 
ftniments, (which, if I had then thoughtof an Earthquake, I 
