(i66) 
eaUly^ as of the Sun from the Dial in a Sunshine. It were good 
to have an Index of Winds, that difcover'd as well their Afcenc 
andDefcent,as their Side-coaftings. 
A Relation concerning the late Earthquake neer Oxford s together 
with feme Ohfervatiom of the fealed Weather glafs, and the Bara, 
meter, both upon that Phamomenon^w^Vi General. 
This Relation was communicated by the excellently learned 
Dr. Wallis , as follows : 
On the 19. of January i& 6 % Stylo Anglia (or Jan, 29. 1 666 , 
Jlylo novo') at divers places neer Oxford, was obferved a fmall 
Earthquake (as at Blechington, S tanton-St. Johns , Bril,Szc.) to- 
wards evening. In Oxford it felf , I doe not hear, that it was 
obferv’d to be an Earthquake s yet I remember about that time 
(whether precifely then or not, I cannot fay) I took notice of 
feme kind ofodde lhaking or heaving, I obferved in myftudy 5 
but did impute it to the going of Carts or Coaches , fuppofed 
to be not far off ; though yet I did take notice of it , as a little 
differing from what is ufualon fuch occafions ; (and wondered 
the more, that I did not hear any:) But not knowing, what eife 
to refer it to, I thought no more of it. And the like account I 
have had fromfome others in Oxford,, who yet did not think of 
an Earth quake ; it being a rare thing with us. Hearing after- 
wards of an Earthquake obferved by others ; I looked on my 
Notes concerning my Thermofcope and Baro/cope 3 to fee if any al- 
teration confiderable had then happened. 
My Thermofcope confifts of a round large Glafs , containing 
about half a pint or more; from whence iffues along Cylin- 
drical neck of Glafs, about two foot and a half in length, and 
left than a quarter of an inch diameter ; which neck was her- 
metically fealed at the top, to exclude communication with the 
External Air ; but before the fealing of it, the whole Glafs was 
filled with Spirit of Wine ( tinged with Cochineel , to make it the 
more difcernable to the Eyejfo warmed, that it filled the whole 
content of the Glafs;but afterwards, as it cooIed,did fo fubfide, 
as to leave a void fpace in the upper part of the Neck. Which 
Inftrument,fo prepared, doth by the riling or falling of the tin- 
ged liquor in the necJt(confequent upon the expanding or con- 
tracting of the whofe liquor contained in it and the Ball be- 
low)give a very nice account of the Temperature of the Air, 
as 
