1or cold. And ſince alſo that according to
the bare denſity or rarity of the Air in
cumbent on the ſubjacent Quick-ſilver in
the Veſſel, that in the Tube was impell'd
more or leſs high; ſuch changes happen
ing in the neighboring part of the out
ward Air, either by the aſcenſion of groſs
or copious exhalations, or by any other
cauſe (of which there may be divers) as
were capable to make conſiderable altera
tions in the conſiſtence of the Air, as to
rarity and denſity, may be able propor
tionably to alter the heighth of the
Quick-ſilver: I rather ſay, that ſuch alte
rations may be, then that they are the
cauſes of our Phænomenon, becauſe I think
it ſufficient, if I have propoſ'd conje
ctures not altogether irrational about a
new Myſtery of Nature, touching which,
the chief thing I pretend to, is to give oc
caſion to the Curious to inquire further
into it then I have been yet able to do.
the bare denſity or rarity of the Air in
cumbent on the ſubjacent Quick-ſilver in
the Veſſel, that in the Tube was impell'd
more or leſs high; ſuch changes happen
ing in the neighboring part of the out
ward Air, either by the aſcenſion of groſs
or copious exhalations, or by any other
cauſe (of which there may be divers) as
were capable to make conſiderable altera
tions in the conſiſtence of the Air, as to
rarity and denſity, may be able propor
tionably to alter the heighth of the
Quick-ſilver: I rather ſay, that ſuch alte
rations may be, then that they are the
cauſes of our Phænomenon, becauſe I think
it ſufficient, if I have propoſ'd conje
ctures not altogether irrational about a
new Myſtery of Nature, touching which,
the chief thing I pretend to, is to give oc
caſion to the Curious to inquire further
into it then I have been yet able to do.
THe ſame Reaſon that mov'd us to
conclude, that by the drawing of the
Air out of the Receiver, the Mercury
would deſcend in a Tube ſhorter then ſix
and twenty digits, induc'd us alſo to ex-
conclude, that by the drawing of the
Air out of the Receiver, the Mercury
would deſcend in a Tube ſhorter then ſix
and twenty digits, induc'd us alſo to ex-
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