1rous, that could well be made without
ſome ſuch Engine as ours) ſome things
might be ſpeciouſly enough alleadg'd; we
thought fit to make a tryal or two, in or
der to the Diſcovery of what the Air does
in conveying of ſounds, reſerving divers
other Experiments tryable in our Engine
concerning ſounds, till we can obtain more
leaſure to proſecute them. Conceiving it
then the beſt way to make our tryal with
ſuch a noiſe as might not be loud enough
to make it difficult to diſcern ſlighter va
riations in it, but rather might be, both
laſting, that we might take notice by what
degrees it decreaſ'd; and ſo ſmall, that
it could not grow much weaker with
out becoming imperceptible. We took
a Watch, whoſe Caſe we open'd, that
the contain'd Air might have free egreſs
into that of the Receiver. And this Watch
was ſuſpended in the cavity of the Veſſel
onely by a Pack-thred, as the unlikelieſt
thing to convey a ſound to the top of the
Receiver: And then cloſing up the Veſ
ſel with melted Plaiſter, we liſten'd near
the ſides of it, and plainly enough heard
the noiſe made by the ballance. Thoſe al
ſo of us, that watch'd for that Circum
ſtance, obſerv'd, that the noiſe ſeem'd to
ſome ſuch Engine as ours) ſome things
might be ſpeciouſly enough alleadg'd; we
thought fit to make a tryal or two, in or
der to the Diſcovery of what the Air does
in conveying of ſounds, reſerving divers
other Experiments tryable in our Engine
concerning ſounds, till we can obtain more
leaſure to proſecute them. Conceiving it
then the beſt way to make our tryal with
ſuch a noiſe as might not be loud enough
to make it difficult to diſcern ſlighter va
riations in it, but rather might be, both
laſting, that we might take notice by what
degrees it decreaſ'd; and ſo ſmall, that
it could not grow much weaker with
out becoming imperceptible. We took
a Watch, whoſe Caſe we open'd, that
the contain'd Air might have free egreſs
into that of the Receiver. And this Watch
was ſuſpended in the cavity of the Veſſel
onely by a Pack-thred, as the unlikelieſt
thing to convey a ſound to the top of the
Receiver: And then cloſing up the Veſ
ſel with melted Plaiſter, we liſten'd near
the ſides of it, and plainly enough heard
the noiſe made by the ballance. Thoſe al
ſo of us, that watch'd for that Circum
ſtance, obſerv'd, that the noiſe ſeem'd to
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