Book excerpt: The First and Second Books of Discipline were amongst the constitutional foundation documents of the Scottish Reformation, and for four and a half centuries have been relied on to guide the polity of Presbyterian churches around the world. Their scholarly editing and publication a generation ago helped to revive serious study in the Church's constitutional law; and this reprint makes very important material available in a time of immense organisational change in the Church. Rev Dr Marjory A MacLean Deputy Principal Clerk to the General Assembly of the Church of Scotland