Appendix to a dissertation on Baptism : Intended to expose the fallacy and absurdity of the ideas of the baptists concerning circumcision and Baptism; the two churches of the Old and New Testaments; the two covenants and two seeds of Abraham;-containing a full answer to all that Messrs M'Lean and Booth have advanced on these subects: in a series of letters addressed to Mr M'Lean, of Edinburgh. By Alexander Pirie, pastor of a Congregational Church in Newburgh.