A Course of Mechanical, Magnetical, Optical, Hydrostatical and Pneumatical Experiments

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  ... 16th DAY.THAT Fluids gravitate in proprio loco, the upper Parts continually pressing upon the lower: That this Pressure is not only propagated Downwards, but even Upwards, and Sideways, according to all possible Directions; That a lighter Fluid may gravitate upon a heavier, and an heavier upon a lighter; That a Fluid may sustain a Body heavier in Specie than it self, and even raise it up; That a Fluid may detain a Body lighter in Specie than it self, and even depress it. A general Experiment to prove, that a competent Pressure of a Fluid may produce the remarkable Phænomena of the Torricellian Tube, the Pump, Syringe, Syphon, polished Plates, and other Effects of the like Nature...