Philosophia Britannica [electronic resource] : or, a new and comprehensive system of the Newtonian philosophy, astronomy, and geography, in a course of twelve lectures, with notes; Containing the physical, mechanical, geometrical, and experimental proofs and illustrations of all the Principal Propositions in every Branch of Natural Science: also A particular Account of the invention, structure, improvement and uses of all the considerable instruments, engines, and machines; With new calculations relating to their nature power, and operation. The whole collected and methodized from all the principal authors, and public Memoirs; and embellished with eighty-one copper-plates. By B. Martin.