The conversion or change of the substance of the bread and wine in the eucharist into the body and blood of Jesus Christ, which the Romish church suppose to be wrought by the consecration of the priest. Nothing can be more contradictory to Scripture, or to common sense, than this doctrine. It must be evident to every one who is not blinded by ignorance and prejudice, that our Lord's words, "This is my body, " are mere figurative expressions: besides, such a transubstantiation is so opposite to the testimony of our senses, as completely to undermine the whole proof of all the miracles by which God hath confirmed relation. According to such a transubstantiation, the same body is alive and dead at once, and may be in a million of different places whole and entire at the same instant of time; accidents remain without a substance, and substance without accidents; and that a part of Christ's body is equal to the whole. It is also contrary to the end of the sacrament, which is to represent and commemorate Christ, not to believe that he is corporeally present, 1 Corinthians 9:24-25 . But we need not waste time in attempting to refute a doctrine which by its impious consequences refutes itself.
See Smith's Errors of the Church of Rome, dial. 6; A Dialogue between Philalethes and Benevolus; Kidder's Messiah, part 3: p. 80; and Brown's Compendium, p. 613.