An account of experiments to determine the figure of the earth : by means of the pendulum vibrating seconds in different latitudes, as well as on various other subjects of philosophical inquiry /

"Printed at the expense of the Board of Longitude."

Experiments for determining the variation in the length of the seconds' pendulum. I. With detached invariable pendulums. II. With attached invariable pendulums. Latitudes of the pendulum stations. Application of the observed variation in the length of the seconds' pendulum to the determination of the figure of the earth -- Geographical notes. Longitudes of the pendulum stations -- Hydrographical notices -- Experiments for determining the variation in the intensity of terrestrial magnetism -- Atmospheric notices.

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