John Whitehurst: An attempt towards obtaining invariable measures of length, capacity, and weight, from the mensuration of time, independent of the mechanical operations. Published: London, John Whitehurst Page length: xviii, 34p Illustrated. (Bound with: observations on the ventilation of rooms… by John Whitehurst; and an inquiry into the original state and formation of the earth, by John Whitehurst.). Strutt 1787