mo 
(iSo) 
as of th q Changes of the Air, that accompanied it. To inform you 
of which, I mu ft relate to you , that riding one Evening forne- 
what late betwixt Oxford & a Lodging, I have at a place, 4. miles 
dift2nt from it , the weather having been for a pretty while 
Frofty, I found the Wind fo very cold , that it reduced me to 
put on fome defenfives againft it, which I never fince, nor, if I 
forget not , all the foregoing part of the Winter was obliged 
to make ufe off. My unwillingnefs to ftay long in fo trouble- 
fome a Cold, which continued very piercing, till I had got half 
way home-ward , did put me upon galloping at no very lafy 
rate s and yet, before I could get to my Lodgings^ I found the 
Wind turned, and felt the Rain falling ; which, confidering the 
Ihortnefs of the time, and that this Accident was preceded by 
a fetled Froft , was furpriftng to me , and induced me to men- 
tion it at my return , as one of the greateft and fuddaineft Al- 
terations of Air 5 I had ever obferv’d ‘ And what changes I 
found, have been taken notice of in the Gravity of the At- 
ifphere at the fame time by that Accurate Obferver * DrJ 
* s,i Nam. ,0. m. Tranf- W f H !‘ the " no ' hi ! 1 g 
or what follow d s as I fuppofe, he 
has ere this told you himfelf. Soon 
after , by my guefs about an hour, 
there was a manifeft Trembling in 
gttthe Houfe where I was ( which 
Hands high in comparifon-rpf Oxford.') But it was not there fo 
great, but that I , who chanced to have my thoughts bufied e» 
Bough on other matters,thari the weather, fhould not have taken 
notice of it as an Earth-quafe , but have imputed it to fome o- 
ther caufe , if one, that you know , whofe hand is employed in 
this Paper, and begins to be a diligent obferver of Natural 
things, had not advertis’d me of it- as being taken notice of, by 
him and the reft of the people of the Houfe. And foon after 
there hapnecl a brisk Storm : whereupon I fent to make inquiry 
at a place call d Brill , which ftanding upon a much higher 
ground, I fuppofed might be more obnoxious to the effedfs of 
the Earth-quake (of which, had I had any fufpition of it, my ha- 
ving formerly been in one neer the Lacus Lemanus , would have 
made me the more obfervants ) But the perfon I fent to, being 
difabled 
aftions p. 166 — 171 •, at the 
time of the printing whereof this 
Relation of Mr . Boyle was not 
jet come to hand. 
