ip5 DE BAROMFTRO , CFIFS SCALA 



cUiiis cnpacius fit circiter 288"®. Cnmpann talis \itrea 

 bene lithcKolla ciim cylindro fcrrco coniungatiir , vt onini 

 aeri extcnio iiditus dcncgctur. 



10) Infundatnr aqiui in \as N O P Q^ vt totus appa- 

 ratns praetcr apcrturam tubi gracilioris a b tubo A B im- 

 mincntis fubmcrfus fit 



11) Notctur thcrmometro R S tcmpcries aquae , 

 vt ad eam qualibct oblcruatiunc afliifionc frigidae \el ca- 

 lidae rcduci poffit aqua. 



15) Infundatur in cylindmm AB argcntum \iuum , 

 doncc apparcat in rccipicnic \alc 1) E E E. l''\amincntur 

 fjmul altitudo ad quam in tubo A B mcrcurius ftagnat 

 pcrallclcpipcdo in horizontali fitu rctcnto. Si aititudo Baro- 

 metri mcdiae propinqua obtinct , fullicit fi altitudo in cyiindro 

 A B (iipra fupcrficicm mcrcurii in cylindro E E c(l trium 

 digitorum et in cyhndro E E non minor vna ct dimidia 

 linca, fi minorcs altitudincs dcprchcnduntur afllindaiur ad- 

 huc aliquid mcrcurii. 



16) Inquiratur in potcntiam, quac rcquiritur ad pa- 

 rallclcpipcdum cum vafc E E E ct tubo C D adplicato 

 et mercurio , qucm tubus ciim vafe E E continct , cx 

 pundo G, quac diftct a k vna quinta partc lincac KD, 

 in aqua fulkntandum in hori7-ontaIi fitu. 



17) propc G iiimcturvas cauum cylindricum metalli- 

 cum vndiquaquc claufum W ad fulcrum tx G 'cum parallclc- 

 pipedo FH coniuntflnm ope cochlearum. Exfurgat cx ccntra 

 ^afis W axis chnlybeus //, cuius diamctcr fit vniiis iincac. Ca« 

 pacitas vafis W fit ranta , vt potcntia iUud ad fiilcrum / x 

 parallclcpipcdo F H in hori7/)ntaIi fitn rctcnto (iibmci^cns 

 Ct acqualis (ummac cx potcntia , quac paraliclcpipcdum 



cum 



