A discourse of the plague. Containing the nature, causes, signs, and presages of the pestilence in general. Together with the state of the present contagion. Also most rational preservatives for families, and choice curative medicines both for rich and poor. With several waies [sic] for purifying the air in houses, streets, etc. Published for the benefit of this great city of London, and suburbs, by Gideon Harvey M.D.