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Dear Sir, As the experiment of determining the universal attraction of matter, which you lately conducted with so much accuracy and success, is of so great importance and curiosity, that it may probably be hereafter repeated by the learned in other countries, and in other situations; and as the utmost precision is desirable in so nice an experiment; I have composed the inclosed paper to determine the best part of a hill for making the observations, so as to obtain the greatest quantity of attraction.

philosophical transactions of the royal society of london

I. Calculations to determine at what point in the side of a hill its attraction will be the greatest, &c. By Charles Hutton, LL.D and F.R.S. in a letter to Nevil Maskelyne, D.D. F. R. S. and Astronomer Royal