( 21^9 ) 
ftrongeft, and not being fubjt?£t to Corriiptian from the 
other, as Water or Air, may dcferv^ (he faith) the name 
of the Bookof Eternity^ 
Some Experiments ef Signor CaroloRinaldini, Vhihfopher 
and Mathematician in the Vnivefjity of Padoua 5 [hewing 
th^ difference of Ice made without Air 5 from that which 
is produced with Air : , In the fame Venetian JournaU 
THere was taken a Glafs-canc , about if of a Flo* 
rentin braccia or Ellj open at one end, of which a- 
bove one Ell and a quarter was fill'd with Quick-filver, 
the reft with common water* This open end was fliuc 
with a finger, and inverted into a vefTel with ftagnanc 
Mercury 5 then removing the finger , the Mercury be- 
gan to fall out, fo that the aggregatof the Quick-filver 
and water falling , the water remain'd in the upper-part 
of the inverted cane 3 now free from Air. This being 
done, the Cane was thusexpofed to the open Air in the 
Month of y^wtt^ry^ in frofty weather , and in one night 
the water in it was congealed into Ice of a very good 
confiftence* Afterwards Signor Rinaldini^ havingcom- 
pared this Ice with that which was produced in the open 
Air, foundj that the Ice in the Cane was in fubftance ak 
together hke that of Hail, that iSjan opaque and whitifli 
Body 5 whereas that, which was made in the Air ^ was 
tranfparent like Chryftal, Befides, he obferved, that the 
Ice made in the Cane was heavier than that in the 
attibient Air: which he difcover'd by putting it into a 
fluid, which was in fpecie lighter than water 5 but heavier 
than leemadein the open Air; whereby he found^thar, 
whereas the Ice made in the Cane funk, that in the Air 
floated therein* 
^ Which Experiment feems not to favour thofe (faith 
the AuthorJ whoefteem, that Ice, made in the common 
Air, is prodnced ^ the extrufion of Air latitant in the 
water, and by th*efolution of the more fubtile part?, 
receiving in their ftead the mixture of terreftrial exha. 
D d d 2 lations 
