Quitting preliminaries and generalities, it is now time to present to the Sabbatarian soldier the manual of his exercise and tactics, to which all that goes before is introductory. The manual shall be narrowed within the closest practicable compass. “Be practical, be practical!” then—the frequent exclamation of our departed leader—shall be our steady aim—_in medias res_, our watchword. I. PRINCIPLES OF ACTION. First of all, the strength of our position, the foundation on which we rest, the star which is our guide, the stay in defeat, the hope in adversity, the confidence in weakness, the power that makes invincible, is the word of God: “Remember the Sabbath-day, to keep it holy.” The divine authority and perpetual obligation of the Fourth Commandment of the Moral Law, is the creed and test of the true Sabbatarian. This is the _sacramentum_ of our legion. None who does not take it is worthy to contend in the Sabbath ranks, or will stand firm in the shock of conflict. 2. The Sabbath contended for is one natural day in seven, every single portion of which is as sacred as every other portion; and no distinction of canonical and uncanonical, or morning and evening hours exists, or is to be listened to. All the day is the Lord’s day. 3. Works of necessity and mercy are not exceptions to the Sabbath rule; they are a part of the commandment implied in its terms, and authoritatively sanctioned by the Lord of the Sabbath. But the necessity must be real, and the mercy unquestionable; the one not such as prudent foresight or patient waiting would supersede, nor the other mere trifling or mawkishness. 4. Such being the doctrinal test of the true Sabbatarian, it may not be amiss to add, that there is a practical test which has been found valuable, viz., that he repudiates all systematic Sabbath railway traffic, whether morning or evening, and whether for man or mail—hating post-office traffic equally with railway traffic. He rejects the morning and evening scheme both on principle and on policy—on principle, because he holds all portions of the day equally holy; and on policy, because he knows that the iniquity once insinuated into a portion of the day will diffuse itself over the whole; and that the public, once swallowing the little bait, and committing the little sin, will become familiarised with the whole evil, and soon have neither moral principle nor courage left to oppose its out-and-out establishment. In regard, again, to the mail train, this is certainly, in the Sabbatarian’s eyes, as bad; he probably regards it as worse than the other. The combination of both is just a double iniquity, with this aggravation, that the post-office work is a national offence, sending worldliness in all the infinite varieties of correspondence into houses and families, which, but for it, might have enjoyed the blessing of one day’s repose in seven from the destructive tear and wear of life.