A treatise of diseases of the head, brain and nerves [electronic resource] : With directions for their cure, and how several deplorable and sudden indispositions attending them, as apoplexies, epilepsies, palsies, &c. may be prevented, and consequently many lives saved by the medicines herein prescrib'd. To which is subjoin'd, a discourse of the nature, real cause and certain cure of melancholly in men, and vapours in women. By a physician.