The Quakers unmasked [electronic resource] : their double-dealing and false-heartedness discovered by collections taken out of their own writings, which were communicated to G. Fox, G. Whitehead, and others of their preachers and leaders : wherein may be seen some of their contradictions thereupon by another hand : also, one of the forms of their oaths, used amongst themselves, with their definition of an oath : likewise a letter and paper formerly sent to the abovesaid G.F. : whereunto are annexed some remarks, &c. : also what an oath is : in a letter to E.S. ..