In the carrying out of the royal commands there was consequently, at this stage in the development of pressing, little if any resort to direct coercion. From the very nature of the case the principle of coercion was there, but it was there only in the bud. The king's right to hale whom he would into his service being practically undisputed, a threat of reprisals in the event of disobedience answered all purposes, and even this threat was as yet more often implied than openly expressed. King John was perhaps the first to clothe it in words. Requisitioning the services of the mariners of Wales, a notoriously disloyal body, he gave the warrant, issued in 1208, a severely minatory turn. "Know ye for certain," it ran, "that if ye act contrary to this, we will cause you and the masters of your vessels to be hanged, and all your goods to be seized for our use." At this point in the gradual subjection of the seaman to the needs of the nation, defensive or the contrary, we are confronted by an event as remarkable in its nature as it is epoch-making in its consequences. Magna Charta was sealed on the 13th of June 1215, and within a year of that date, on, namely, the 14th of April then next ensuing, King John issued his commission to the barons of twenty-two seaports, requiring them, in terms admitting of neither misconstruction nor compromise, to arrest all ships, and to assemble those ships, together with their companies, in the River of Thames before a certain day. [Footnote: Hardy, _Rotuli Litterarum Clausarum_, 1833.] This wholesale embargo upon the shipping and seamen of the nation, imposed as it was immediately after the ensealing of Magna Charta, raises a question of great constitutional interest. In what sense, and to what extent, was the Charter of English Liberties intended to apply to the seafaring man? Essentially a tyrant and a ruthless promise-breaker, John's natural cruelty would in itself sufficiently account for the dire penalties threatened under the warrant of 1208; but neither his tyranny, his faithlessness of character, nor his very human irritation at the concessions wrung from him by his barons, can explain to our satisfaction why, having granted a charter affirming and safeguarding the liberties of, ostensibly, every class of his people, he should immediately inflict upon one of those classes, and that, too, the one least of all concerned in his historic dispute, the pains of a most rigorous impressment. The only rational explanation of his conduct is, that in thus acting he was contravening no convention, doing violence to no covenant, but was, on the contrary, merely exercising, in accordance with time-honoured usage, an already well-recognised, clearly denned and firmly seated prerogative which the great charter he had so recently put his hand to was in no sense intended to limit or annul.