Articles by Henry Beighton on sound and on a design of a quadrant Consists of: - 'No vii Of Sound' - 'No viii Of the Force of Sound' - 'No ix an easy and cheap method of making a large Quadrant or Arch, capable of taking the Latitude of a Place very exactly' with a description of the instrument and observations of the instrument Read to the Royal Society on 10, 17 and 24 May 1739 1739