UPON these articles, and act of union, it is to be observed, 1. That the two kingdoms are now so inseparably united, that nothing can ever disunite them again, but an infringement of those points which, when they were separate and independent nations, it was mutually stipulated should be "fundamental and essential conditions of the union." 2. That whatever else may be deemed "fundamental and essential conditions," the preservation of the two churches, of England and Scotland, in the same state that they were in at the time of the union, and the maintenance of the acts of uniformity which establish our common prayer, are expressly declared so to be. 3. That therefore any alteration in the constitutions of either of those churches, or in the liturgy of the church of England, would be an infringement of these "fundamental and essential conditions," and greatly endanger the union. 4. That the municipal laws of Scotland are ordained to be still observed in that part of the island, unless altered by parliament; and, as the parliament has not yet thought proper, except in a few instances, to alter them, they still (with regard to the particulars unaltered) continue in full force. Wherefore the municipal or common laws of England are, generally speaking, of no force or validity in Scotland; and, of consequence, in the ensuing commentaries, we shall have very little occasion to mention, any farther than sometimes by way of illustration, the municipal laws of that part of the united kingdoms. THE town of Berwick upon Tweed, though subject to the crown of England ever since the conquest of it in the reign of Edward IV, is not part of the kingdom of England, nor subject to the common law; though it is subject to all acts of parliament, being represented by burgesses therein. And therefore it was declared by statute 20 Geo. II. c. 42. that where England only is mentioned in any act of parliament, the same notwithstanding shall be deemed to comprehend the dominion of Wales, and town of Berwick upon Tweed. But the general law there used is the Scots law, and the ordinary process of the courts of Westminster-hall is there of no authority[e]. [Footnote e: 1 Sid. 382. 2 Show. 365.]