140 Mr. henly’s Experiments and 
8. Since the learned and accurate F. beccaria pub- 
lifhed the account of his curious experiment of revivi- 
fying the calces of metals by electricity, it hath been re- 
peated with perfect fuccefs by feveral other gentlemen. 
9. With refpeCt to earthquakes, upon this liypo- 
thelis Dr. stukeley’s and the rev. Mr. mitchel’s inge- 
nious theory may both be near to truth, as the difference 
between them will confifl more in words than in facts. 
See a molt curious and aftonilhing effeCt of evaporation 
produced by electricity in Dr. franklin’s Experiments 
and Obfervations, firft edit. p. 415. Perhaps it may not 
be improper to mention in this place the following 
experiment, which I made long fince myfelf. A 
pretty large wine-glafs being nearly filled with water, 
two wires, terminated by fmall brafs balls, were hung 
oppolite to each other upon the brim of the glafs, fo as 
to let the balls defcend to about half the depth of the 
water. The communication being then compleated by a 
chain, a jar containing three fquare feet of coated fur- 
face, was difcharged through it. The confequence was, 
the Item of the glafs was broken in two places ; the bowl 
was fhivered perhaps into a thoufand pieces, and fcat- 
tered with the water in all directions : part of it flew into 
my face, and fo much upon the apparatus, that I remem- 
ber it put an end to my experiments for that time. I had 
negleCted to cover the glafs, being defirous to fee the 
effeCt 
