Borelli, Giovanni Alfonso, De motionibus naturalibus a gravitate pendentibus, 1670

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1
rarefieri
moles aquæ ipſius vaſis, nihilominùs ego
animaduerti
, & docui hoc contingere à reſtrictione
eiuſdem
vitrei vaſis; poſtea à puncto F continuato
motu
moles aquæ decreſcit, condenſaturque, quouſ­

que
deprimatur ad punctum G graduum 120. & hìc
pauliſper
videtur quieſcere, poſtea denuò moles
aquæ
fluidæ augeri incipit, ſubleuaturque ab infimo
ſigno
G vſque ad punctum H, ſcilicèt vſque ad gra­
dum
130. & paulò poſt vehementiſſimum ſaltum
qua
efficit vſque ad gradum 166. in I, & tunc præ­
cisè
obtenebratur veluti nebula aqua in vaſe AB con­
tenta
, & in glaciem vertitur, eodem illo exiguo, &
imperceptibili
tempore, quo velociſſimus aquæ ſal­
tus
efficitur; præterea dum maiorem duritiem gla­
cies
acquirit, & aliquæ partes fluidæ propè colli ex­
tremitatem
AC gelantur, proſequitur fluxus aquæ
ſupra
ſignum I verſus D, ibidemque profluit egredi­
turque
aqua extra vas; ex qua hiſtoria (relictis innu­
meris
alijs experimentis) euidentiſſimè conſtat, aquam
in
actu congelationis rarefieri, ſcilicèt expandi, & ad
ſpatium
amplius redigi, idemque obſeruatur
aquis
ſtillatitijs; thermalibus, in vino, in aceto, in li­
monum
acredine, & in ſpiritu vitrioli; & ſolummo­
aer, ſpiritus vini, olea, & hydrargyrum ab hac
communi
lege eximuntur, quæ ab intenſiori gradu
frigoris
ſemper magis mole imminuuntur ſtringun­
turque
, licèt oleum aliquo pacto conſiſtentiam ſoli­
ditatemque
acquirat, cum aer, ſpiritus vini, & hydrar­
gyrum
ſemper fluida remaneant.

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