The great question now for Scotland to determine is, whether these interests are to be sacrificed to the theories of any ministry whatever, without resistance of the most determined nature. That resistance, in our deliberate opinion, she is not only entitled, but bound, to make. We have purposely abstained from dwelling--nay, we have scarcely even touched--upon any points of extraneous irritation which may exist between the sister countries. Our wish is, that this question should be tried upon its own merits, independently of any such considerations; and we are glad to see that this line of conduct has been adopted by every one of the numerous bodies who have hitherto met to protest against the change. Believing thoroughly and sincerely that we have a clear case, both on the score of justice and expediency, we do not wish to revive any warmer feeling, though we are convinced that a word could arouse it. Scotland in this matter feels, and will speak, like a single man. We are sure of the unanimous support and energy of the members for the ancient kingdom; and although that phalanx forms but an integral part of the legislature of Great Britain, we will not allow ourselves to believe that any minister will proceed with so obnoxious a measure in the face of their united opposition. One word only of advice we shall venture to offer them, before they leave their native country to do battle in her behalf. COMPROMISE NOTHING! Do not, as you value the interests of Scotland, permit even the smallest interference with a system which has already obtained the unqualified approval of the state. If you do, rely upon it that one change will be merely the forerunner of another--that the statute-book, in each succeeding session of Parliament, will exhibit new changes and new modifications, until, gradually and by piecemeal, we shall lose all the benefits of those national institutions which you are now ready and pledged to maintain whole and unimpaired. Any other line of tactics must, in the long run, prove not only injurious, but fatal, to the cause you support.