A short discourse concerning pestilential contagion, [electronic resource] : or the plague, with the methods to be used to prevent it, As well by the Diligence of the Civil Magi strate, in the Execution of his Office, as by the Care, and Caution, of every particular Person. In Two Parts. By R. Mead M. D. F. R. S. N. B. The Doctor, who is deservedly esteem'd One of the ablest Physicians in London, undertook the Writing of this Discourse, at the Desire of their Excellencies, the Lords Justices of Great-Britain, signified to him, by Mr. Secretary Craggs, to whom he address'd it, in a Dedication, dated Nov. 29. 1720.