±ii DE CAL. AC FRIG. EXPER. VARIA FACTA, 



fed etiam ferri , bismuthi , ct antimonii. Imicni igitiir, 

 aquiim , in nibo vitrco cylinJrico contcntnm , fliiid.ijn 

 occup.ilIe longitudincm 1168. p.irt. congclitnm \cro pc- 

 nitus rcplcuilfc longitudincm 1290. c:uundcm partium ; 

 dnninte quidem congel.uionc ruptus fuit tubus hic nliquot 

 in locis , led manfit tamcn c^iindricus, et ad fenfiim cius- 

 dem diametri cum priori , partibus ruptis fibi cohacrcnti- 

 bus ; quare ex hoc cxpcrimcnto quamproximc concludi 

 poffe pnto , enc dcnfitatcm aquac ad dcnfitatcm glacici 

 rr 1290 : 1 168 ~ 1000 : 905 , vcl circitcr vti 9 ad 8, 

 qiiac communis cfl fcntcntia. Alio autcni tcmp<irc ma- 

 gis exacluiTi infiitni cxpcrimcntum , capicndo fmlium gia- 

 ciei fcmilibralc circitcr , lcd purinunac inll;ir cryfialli , ct 

 planc carcntis quacunquc vcl minima ctiam bulla acrca , 

 aut alia hctcrogcncitatc \ huic alligando fi-nlhim mctalli 

 Tt fubmcrgcrctur in aqua , ct Kligendo acris tcm}x;ricm 

 taicm , in qua nuUa lulpicio oriri poflct , durantc liibmcr- 

 fionc in aqu.un glacici aliquid potuiflc acccdcrc , aut dc- 

 cedcre •, abflincndo practcrca a manuum immcdiato v(ii , 

 iubdufto tandcm calculo , in quo ratio mctalli alligati ha- 

 ixjbatur , inucni dcnfitatcm aquac ad dcnfitatcm huius 

 glaciei puriflimae vti 1000. ad 916. 



§. 6. Pracccdciui quacflioni hiuid abfimilis cfl, quan- 

 tum voluminis occupcnt niucs ct aquac cx iis collcdne. 

 In vafculo igitur cubico acnco comprcfii vi cuncf^a manu- 

 um niucm , c]uac rcccntiflimc cccidcrat •, atquc fic aititu- 

 ■dincm tciKb.at tandcm partium 93 , pondiis vcro , fub- 

 trafto valuih pondcre , 225.gr. quoruin 7(^80. ficiunt 

 libram Hollandicam. Nix hacc pcr lcntm calorcm ct 

 obturato >ali;ulo in aquas rcloluta tcocbat in ciklcm 



v.ifcula 



