Abstract
The problem of replacing dynamical by statical methods of studying the variations of the earth’s gravitational force has long occupied the attention of astronomers and physicists, and a good many attempts have been made to construct an instrument which should enable relative measurements of gravitational force to be carried out with a smaller expenditure of time and trouble than is incidental to the observation of pendulums. The only kind of force which is practicable as a means of opposing gravitation in the construction of such an instrument as is here contemplated, is that derived from the elastic properties of matter.

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