| Description | Written at Petersfield to the Honourable Sir Hans Sloane Bart, President, and to the Council and Fellows of the Royal Society
' An Attempt to prove that one great cause of the Mercury in the Barometer, when the Air is saturated or over - charged with Vapoours, is from the power of Attraction, which then exerts itself between the constituent Vesiculae or Globuli of the Clouds adn Vapours, so as to lessen their force of Gravity towards the Earth... '
Read at the Royal Society on 3 May 1733 |