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wafm Breath, at all times diffufing a fulphareous 
Stench, (fomething like that which arifes fromFile- 
ings of Iron, while corroding with Vinegar) affetting 
thofe who came into it with a Giddinefs, Shortnefs of 
Breath, and Propenfity to vomit; fo that a.t laft the 
Well was filled up, being troublefome to the Family 
which liv’d near it. 
I have fent you a little Quantity of th t Stratum 
above-mention’d, which is continued to the neigh- 
bouring Clift, where, when heated with the Sum- 
mer’s Sun, it gives a noifome fulphureous Smell, and 
is, after moderate Rains, cover’d with a yellowifh 
efllorefcent Salt, very aftringent and acid.— —On the 
Shore below there are gather’d : 'Pyrites . 
I am , 
‘Dear Sir y 
Newport (Wight Ifle) Lour moft affectionate 
humble Servant , 
Benj. Cooke* 
By a Letter fince from Mr. Cooke, he fays , 
1 have recolle&ed fome further Obfervations on the 
Damp. The Vein which was cut through in the 
Middle of the Well, from whence were emitted the 
fatal Effluvia , is a crude Ore made up with Iron, Sul- 
phur and acid Salts, mix’d with ‘Pyrites. 
Thefe Effluvia were not perceiv’d till after the Vein 
had imbib’d the Air for feveral Days. 
Whilft the Air continued dry, thefe Effluvia fub- 
fided, and lay in the lower Part of the Well, which 
feem’d 
