^66 EK?ERIM. DE COMPRESSIO^^E AERIS 



remouimus , ct app.muu cx bomba cxtrAdo tindum ad 

 infigiicm altitudincm airccndiflc , acr vcro iterum illibato 

 tubo cc toto app.iratn pcr totum tubuni l d ct bulbum 

 cxpanliis ccrncbattir. Pondcrato mcrcurio , qui idtm vo- 

 lumcn habcbat , quod aiir autc comprcllioncm in tubo 

 £ J c ct co , qui idcm habcbat , quod acr in iplb com- 

 prcllionis rtatu in verticc tubi , inucni iiiud ad hoc fcrme 

 •vt 30 ad I. Hioc volumen aeris ccimprdli fuit jo pars 

 voluminib ciusdcm acris antc comprciiioncm. 



Experlm. III. 



§. 6. Conftabat Clarifl"! Ilalcfuim nuda prcHlonc vl 

 preli fi(fla , acrcm in partcm ~ , voluminis rcocginb ct 

 Hallcyum in c^ coardalfc. Subiit animum inquircrc , vtnim 

 per nollram machinam maior comprcflio tflici poflct. 

 Itcrauimus igitur cxpcrimcntum , ct nc prcflionc aqua pcr 

 poros lignci obturamcnti tranliidiu-et ct ita comprcflio ac- 

 ris minor ficrct , quam f )rct fi hoc impcdirctur , obtura- 

 mcntum in bombam aqua implctam pcrcuflionibus mallci 

 coac1:um , vt ac|ua (pumcfccns pcr poros ligni pcncrarct , 

 et fic totam obturamcntum imprcgnarctur , rurlu.s rcmo- 

 uimus acriquc frigido cxpoluimus vt aijua in intcrflitiis 

 congclarct. Dcindc muniuimus bombam aqua implctam 

 ct apparatu dcfcripto inlhiic^lam obturamcnto ct vi prcli 

 illud in bombani iutrufuiuis. Dcindc rcmoto obturanitn- 

 to ct cxcrato apparatu illibato vidimus acrtm in minus 

 adhuc fpatium rcdacflum fuiflc ac cxpcr. II. comprcflione 

 \cro ccfl-uitc idcm rurliis volumcn nadum cfli; , qiiod 

 antc comprcflioncm habucrat , (pauibquc aciis antc ct po(l 



