135 INQl'ISIT. IN RATION. PHAENOMENl cet. 



diori lupcnuicrit cuaporationcm ex va(e niimis profundo , 

 fcii ciim cuenciis in txpcrimcntis diucrlb tcmporc captis 

 diilimillimi circnt , finc nitionc , qiiid notancrim , addcrc 

 noliii. Silcntio antcm non practcrire pofliim , iiiperiicics 

 aquae po(l vnum altcrumquc dicm cuticuh interdum (^- 

 dudas fiiiflc, quac cuaporationcm impcdiuit , vt vix lcnfi- 

 bilis clTct. 



§ +. Rationem cnr vaCi diAo modo comparata ec 

 diclo mcxlo implcta adhibucrim vt affcram c rc efle vide- 

 tur : fulJDicio mihi (iibnalccbatur , fiicilc cligi polTc vaHi ta- 

 lia , quac licet ad (cndim vnius diamctri cdcnt , nihilomi- 

 nus nitione diamctronim di(crcp:ircnt , quo calii , ii dia- 

 mctcr profundioris vafis eflTet maior , cuaporatio ob (iiper- 

 ficicm maiorcm maior cflc debcret ex profundiori vafc , 

 et fi di;imctcr vafis minus profundi cflct maior , euaponi- 

 tio ob (iiperficicm maiorem ex va(c minus profundo ma- 

 ior cflc dcbcict : clcgi hinc maius vas talc , dc quo ccr- 

 tus cram (iipcrficicm aquac aciri cxpoiitam eflfc minorcm 

 in co , quam (iipcrficicm aquac in vafc minori. Dcinde 

 ctiam dubitaui , an cxade va(a fic implcrc poffcm , vt 

 aquu in vtroquc va(e in cadcm diflantia ab orificio vafis 

 llagnarct , et cum ex hac circumitamia diCparitatcm mc- 

 tucrcm , fic implcui aqua piotiindius vas vt ad (cii(iim pro- 

 fuuJior c(fct tiijxirficics aquac acri cxpodta in protiindiori 

 vatc infra oriticium vatis , quam in vatc minus profundo, 

 Curaui fimul vt fupcrficics ac]uac acri cxpofitac cflcnt in 

 codcin horizontali plano , nc diucrlii prcllio acris diucrfi- 

 tatcm gigncre vidcrctur. Prcflionc cnim acris minori mi- 

 nu6 cuaporaflc obicruatum c(l. ( ♦ ) 

 §_Jj 



(•) Philos. Tran.. ( n. ^71.) 



