Socinianism unmasked: in four letters to the lay-members of the Church of Scotland, and especially to those of the collegiate church of Ayr: occasioned by Dr M'gill's Practical essay on the death of Jesus Christ. Proving That he denies the great Doctrines of the Atonement, and of the Deity of our Lord. To which are added, A Letter To The Doctor, And an Humble Address to the Members Of The General Assembly Of The Church Of Scotland. By a friend to truth.