and the Water in the Bottle so far expanded, as to rise quite up to the Top of the Pipe; and be∣ing permitted to subside, several Bubbles of Air rose out of it afresh, as soon as it renew'd its Ex∣pansion as before; but upon a reingress of the Air, it presently subsided almost to the Bottom of the Pipe.
Besides which, the following Phaenomena were observable: First, That those Bubbles, which as∣cended last, were much larger than the former, either, because their Parts were more expanded than before, or because more Bubbles of Air were united together, but whatever was the Cause of it, we observ'd, that they ascended much slower than before.
Another thing to be observ'd was, that tho' Bubbles are usually wont to rise above the Sur∣face of the Water, encompass'd with a thin Film; yet, in this Tube, the Surface of the Water being Convex, the less protuberant Parts of the Bubble were covered with Water.
Another Observation which occurr'd was, that whereas those Bubbles which rose at the Beginning of the Operation, divided the Water which they pass'd through, in their Ascent; these latter expanded Bubbles, filling up the Cavity of the Cylinder in their Passage, rais'd the Wa∣ter before them; till the Air was again permit∣ted to re-enter the Receiver, and then they wholly disappeared.
From which Observations it may Naturally be inferr'd; First, Bodies under Water may be press'd upon by the Atmosphere, as well as in∣cumbent Water; Secondly, It cannot be hence inferr'd, that the Intumescence of the Water