V. An account of a treatise entituled, Calculations and Tables relating to the attractive Virtue of Loadstones, &c. Printed anno 1729

The author, (the Hon. Lord Paisley) by several experiments very carefully made, has observed, that if two loadstones are perfectly homogeneous, that is, if their matter be of the same specifick gravity, and of the same virtue in all parts of one stone, as in the other, and that like parts of their surfaces are cap'd or arm'd with iron, then the weights they sustain will be as the squares of the cube roots of the weights of the loadstones; that is, as their surfaces.