X z ^ 



ATMOMETRI CONSTRVCTIO cet. 



§. 2. Ciim ex inqiiifitione mci in lcgem , fccundiim 

 qiwrn ciilor fliiidi crclcit vcl dccrclcit in confbnti ncris 

 tcmperic , p.ucac , co miniis clfc dccrcmcntum , quo m-.i- 

 ii>r cll niiUra -.iquae et quo minor c(l cius liipcrficics in- 

 figncm malTam aquae , cxiguac liipcrticici , ad euaporatio- 

 ncm exponcrc conllitui , vt tcmpcriem aquac fcruare 

 poflcm condantcm pcr iiKxiicum temporis intcruallum. 



^. 1. Ex cxpcrimcntis f?icpius inllitutis iniiotuit par- 

 ciorcm cflc cuaporationcm ct longo tcmporib intcruallo 

 non liipcrarc pauca grana , fi tempcrics aquac cuaporan' 

 dac adpropinquat tcmpcrici aifris, machinam igitur cuapo- 

 rationi aquac mcnliirandac inrcruicntcm ita conrtmcndam 

 putaui \t paucorum gr.\noiuiu dccrcmentum oblcruaii 

 poflTit. 



§. 3. Cum dcniquc difficillimum fit , fimul obfcniarc 

 €t fimul cxpcrimcnto pcrfcqucndo intcntum cflc , pracfer- 

 tim fi plura pcragcnda funt , machinam fic inllrucrc vol- 

 vi , vt oblcruationi vnice vacarc poflcm. 

 TA. III. §. ^. Has lcgcs machinam conlbudums mihi prac- 



lcribcns conccpi , 



1 ) Vas cylindricum G I K H , ct circa parictcs vafis 

 trcs vcl quatuor rcgulas vcrticalcs in acquali a (c mu- 

 tno ct axi vafis dilbntia fumatas <7^, /;/> , ctc. ct in di- 

 vcrfis a ftindo vafis diftantiis foraminibus pracditas , rotu- 

 las circa axcs mobilcs cc^ dd ^ es^ ff^^^ rccipicntibus, 



2) Vas cylindricum CEDF clauliim ab vtraquc cx- 

 trcmitatc cx tcnui lamina mct.illica f:ibrcta(ftum , c. g: 

 cimb digitus quadratus Lond. non cxccdat pondus 60 gra- 

 norum, 



(3 



