Sidrophel vapulans, or, The quack-astrologer toss'd in a blanket [electronic resource] / by the author of Medicaster medicatus ; in an epistle to W---m S---n [i.e. William Salmon] ; with a postscript, reflecting briefly on his late scurilous libel against the Royal College of Physicians, entituled, A rebuke to the authors of the blue book, by the same hand.