A sacramental catechism : Or, A familiar instructor for young communicants. Plainly unfolding the nature of the covenant of grace, with the two seals thereof, baptism and the Lord's Supper. Wherein especially the sacrament of the Lord's Supper is fully and distinctly handled, both in a doctrinal and practical manner: with many cases of conscience relative thereto, intermixed and resolved, for the relief and support of those who are exercised to Godliness. With an appendix, containing suitable materials for meditation and prayer, both before and after partaking. By the Rev. Mr John Willison, late minister of the Gospel at Dundee.