Afer baptizatus : Or, The Negro turn'd Christian. Being a short and plain discourse, shewing I. The necessity of instructing and baptizing slaves in English plantations. II. The folly of that vulgar opinion, that slaves do cease to be slaves when once baptized. Delivered (most of it) in a sermon preach'd at Stratford-le-Bow in Middlesex, March the 15th 170 1/2. By Anthony Hill, lecturer there, and chaplain to His Grace the Duke of Richmond.