10S Mr. henly’s Experiments and 
ver, by burning it into the very fubftance of the glafs, in 
fuch a manner that nothing can remove it without injuring 
the glafs together with the metal. Glafs thus coated 
and bimrifhed has certainly a moft elegant appearance* 
has no inequalities or points upon its furface, and charges 
as high and as readily as when it is coated with tin-foil ; 
fuch glades will difcharge fpontaneoufly, and one of them, 
which was very thin, was burft by the explofion ; an acci- 
dent which, by this double annealing, I was in hopes to 
have prevented, but was forry to findmyfelf difappointed. 
OBSERVATIONS ON EXCITED GLASS, 
In my remarks on Mr. volta’s curious little machine 
lately prefented to the Royal Society, I have obferved 
that the eledtric matter, being once thoroughly excited 
and put in action, is not fo foon as might be expelled 
reduced again to a quiefcent hate, efpecially in bodies fo 
peculiarly adapted to affeft each other as thefe appear to 
be. As a proof, I introduced the experiments with the 
looking-glafs, crown-glafs, and Dutch plates. I alfo men- 
tioned Dr. Priestley’s obfervations on the refiduum of 
his battery ; and in a note to that paper, I added an ex- 
periment made by my friend the rev. Mr. hemming, 
f. r. s. who fhewed me a fmall bottle, which then at- 
tracted a thread of trial, though it had flood in a cup- 
board 
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