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* 1.1HAVING conveyed a Glass Vessel into our Receiver, in the midst of which was con∣tained a Cylinder filled with Water, and enclo∣sed with Snow and Salt, upon plying of the Pump, the Snow began to melt a little faster than we expected; and the Receiver being pretty well exhausted, the Water in the Cylin∣der began to freeze; so that, in a little time, the Surface of the Ice was above that of the
Water, in which the Snow and Salt was dis∣solved, and which swam about it. The Super∣ficies of the Water was concave, and being held betwixt the Eye and the Light, appear'd full of Bubbles.
And it is not a little strange, That there should be so powerful an Expansion in Water froze, as not only to burst Bottles in the Win∣ter-time, but, as I am inform'd, to separate the solid Parts of Metals; so that Bell-Metal having been expos'd to the Wet, and that Wet froze in the Pores of the Metal, it would fly in Pieces; and Cabeus in lib. 4. Meteor. Aristot. relates a no less memorable Account of Vessels made of Stone, which would fly asunder, upon the Expansion of the Moisture lodged in their Pores, and froze there. Where it is not a little strange, That Cold should by freezing Water, cause it to swell, whereas the Effect it hath upon the Air is manifestly to condense it.
Of the free∣zing of Water and it's Expan∣sion.