Nature the best physician, or, Every man his own doctor : Containing rules for the preservation of health and long life; from infancy to extreme old age. To which are added, A collection of natural, simple and palatable receipts for the recovery of health, to those who are already afflicted with any of the various disorders incident to the human body, not only such as are easy to be purchased by persons of the lowest capacity; but proper for those in higher stations, who loathnauseous and unwholesome foreign drugs. By a Lover of Mankind, who has made the study of the human constitution his principal employment upwards of twenty years.