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4Dissimilar and unequal actions being thus concentrated towards the same end, the great want of moisture quickly supplied by water binds and strongly cements them, and also imparts a rapid solidity, by means of the heat common to both the bodies. It is needless to enquire why, as there are many hot springs in Tuscany, we do not there find a powder, which, for the same reason, would harden under water: should I be thereon questioned, I would thus explain the circumstance.
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