Philosophical Transactions of the Royal Society of London
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XXXIII. An account of the calculations made from the survey and measures taken at Schehallien, in order to ascertain the mean density of the Earth.

    The survey from which these calculations have been made was taken at and about the hill Schehallien in Perthshire, in the years 1774, 1775, and 1776, by the direction, and partly under the inspection, of the Rev. Nevil Maskelyne, D. D. F. R. S. and Astronomer Royal, by whom the manner of making the survey has already been fully explained in the Philosophical Transaction for 1775.

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