A defence of Dr. Whitby's Treatise of original sin, [electronic resource] : and of the translator's introduction, against the late attempts of Mr. John Gill: In which The Charges of Impertinence, Partiality, and Unskilfulness in the Languages, exhibited against him in that Introduction, are effectually maintained; his Citations from the Antient Writers, fully shewn to be beside his Purpose; and his groundless Calumnies, justly exposed, and turned upon himself. By Henry Heywood.