The Principles of Mechanics: Explaining and Demonstrating the General Laws of Motion, the Laws of Gravity, Motion of Descending Bodies, Projectiles, Mechanic Powers, Pendulums, Centers of Gravity, &c. Strength and Stress of Timber, Hydrostatics, and Construction of Machines : a Work Very Necessary to be Known, by All Gentlemen, and Others, that Desire to Have an Insight Into the Works of Nature and Art : and Extremely Useful to All Sorts of Artificers, Particularly to Architects, Engineers, Shipwrights, Millwrights, Watchmakers, &c. Or Any that Work in a Mechanical Way : Illustrated with Forty-three Copper-plates