Nature studied with a view to preserve and restore health. [electronic resource] : Containing An Explanation of the Animal Oeconomy. The Nature and Cause of Diseases and their Cure. The Uncertainty and pernicious Effects of Physic. The Insufficiency of Theory in the Cure of Diseases. Nature proved to be the best Physician. How to continue and restore Health by simple and easy Methods. With an account of a most powerful and safe deobstruent medicine, of great service in many diseases, particularly in Asthma's, Consumptions, King's-Evil, Palsy, and in the worst Kind of Fevers, &c. By William Smith, M.D.