[ 4 } 3 
thofe Inftances only cxccptcd, which I have men- 
tion'd in the Relation ; and the firft Shock of it was 
greater with us than any-where elfe \r. New- England* 
and the Tops of Chimneys,. and Stone fences, were 
thrown down only in thefe Parts. 
TJ L i 
— 
j i:r. 
— 
'*rj 
XII. An Account of Mr . Sutton ? 5 Invention and 
Method of Changing the Air in the Hold, 
and other clofe ‘Parts of a Ship 5 communicated 
to the Royal Society by Richard Mead, M.Z). 
Phyfician to His Majesty, Fellow of the 
Royal Society, and of the Royal College of 
Phyfician s, London; . - 
■ j 
Read 
1 74 1 
/Feb. 11. T T is found by daily Experience, that 
A Air fhut up and confined in a clofe 
Place, without a Succeflion and frefh Supply of it, 
becomes unwholfome, and unfit for the Ufe of Life. 
This is more fenfibly fq, if any ftagnating Water 
be pent up with it. 
But it grows fiill wor'fc, if fuch an Air as this is 
made ufe of in Rcfpiration, that is, becomes moifter 
and hotter, by palling and repairing through the 
LungS. .V v- T ■ j\ t a 
Thefe bad Effects, in different Degrees, according 
to the different Manner in which Air is inclofed, 
are obferved in many Cafes ; particularly in deep 
.Wells and Caverns of the Earth, in Prifons or clofe 
Houfes,. where People are 111 at up with Heat and 
Naflfnefs: But m oft- of all in large Ships, in which, 
with 
