A short account of a course of natural and experimental philosophy [electronic resource] : In which will be exhibited the experiments necessary for the exploration of natural philosophy in general, or the Properties of Matter, and the Law by which it acts. Mechanics. Astronomy; or the Phoenomena arising from the Motion of the heavenly Bodies. Geography, and the Use of the Globes, &c. Hydrostatics; or the Nature and Laws of Fluids explained. Pneumatics, explaining the surprising Properties of the Air, which depend upon its Pressure and Elasticity, its Rarefaction, Condensation, &c. Optics; or the Science of Vision. By J. Arden, Teacher of Experimental Philosophy, at Beverly. The Charge of going through this course is One Guinea each, to be paid at the Time of Subscribing, or at the First Lecture; and to begin as soon as Thirty or more have subscribed. .