An epistolary discourse concerning phlebotomy : in opposition to G. Thomson pseudo-chymist, a pretended disciple of the Lord Verulam : wherein the nature of the blood, and the effects of blood-letting, are enquired into, and the practice thereof experimentally justified (according as it is used by judicious physicians) : [bracket] in the pest, and pestilential diseases, in the small pox, in the scurvey, in pleurisies, and in several other diseases /