greater than that of the Viall, and of its Air: and, therefore, it will not submerge without great violence: but if we demit only the Glass into the water, which shall be when you shall fill the Glass with water, then shall the Glass descend to the Bottom; as superiour in Gravity to the water. [21] The Authors answer to the first Objection. [22] The Authors answer to the second Objection. Returning, therefore, to our first purpose; I say, that Earth is more grave than water, and that therefore, a Solid of Earth goeth to the bottom of it; but one may possibly make a composition of Earth and Air, which shall be less grave than a like Mass of Water; and this shall swim: and yet both this and the other experiment shall very well accord with the Doctrine of _Archimedes_. But because that in my judgment it hath nothing of difficulty in it, I will not positively affirme that _Signor Buonamico_, would by such a discourse object unto _Archimedes_ the absurdity of inferring by his doctrine, that Earth was less grave than Water, though I know not how to conceive what other accident he could have induced thence. Perhaps such a Probleme (in my judgement false) was read by _Signor Buonamico_ in some other Author, by whom peradventure it was attributed as a singular propertie, of some particular Water, and so comes now to be used with a double errour in confutation of _Archimedes_, since he saith no such thing, nor by him that did say it was it meant of the common Element of Water. [Sidenote: The Authors answer to the third Objection.]