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EXPERIMENT XXXI. About the opening of a Syringe, whose Pipe was stopp'd in the exhausted Receiver, and by the help of it, making the Pressure of the Air lift up a conside∣rable Weight.
HAving clos'd up the Hole at the Bottom of the Syringe,* 1.1 with good Cement, we ty'd a hollow piece of Iron to the Barrel, into which several Weights being put, we ty'd the Rammer to the Turn-Key; and tho', when the Receiver was exhausted, we could draw up the Rammer without the Syringe; yet, upon a Reingress of Air, the Syringe and the Weights would be rais'd swiftly up: So that so small a Cylinder of Air as equalled the Barrel of the Pipe, was able to lift up the Weight of sixteen Pounds.