Francis Hauksbee's air pump Finish:Float frame The events followed Palmerston's attempt

The events followed Palmerston's attempt to introduce the Conspiracy to Murder Bill

With a facsimile signature lower right

with the tree of True Liberty

the sitter in black jacket

Francis Hauksbee's air pump Finish:Float frame The events followed Palmerston's attemptPlate illustrates pp. 17 18, 'The Description of the Machine for giving a swift Motion to Bodies in Vacuo, without admitting the External Air', and shows Hauksbee's air pump connected to a wheel mechanism which imparts a rapid rotation speed to a spindle within the glass dome of the air pump. Plate II from Physico mechanical experiments on various subjects, by Francis Hauksbee (London, 1709), presented to the Royal Society by the author on 26 October