It was anciently called "trial per pais" that is, "trial by the country." And now, in every criminal trial, the jury are told that the accused "has, for trial, put himself upon the country; which country you (the jury) are." The object of this trial "by the country," or by the people, in preference to a trial by the government, is to guard against every species of oppression by the government. In order to effect this end, it is indispensable that the people, or "the country," judge of and determine their own liberties against the government; instead of the government's judging of and determining its own powers over the people. How is it possible that juries can do anything to protect the liberties of the people against the government, if they are not allowed to determine what those liberties are? Any government, that is its own judge of, and determines authoritatively for the people, what are its own powers over the people, is an absolute government of course. It has all the powers that it chooses to exercise. There is no other or at least no more accurate definition of a despotism than this. On the other hand, any people, that judge of, and determine authoritatively for the government, what are their own liberties against the government, of course retain all the liberties they wish to enjoy. And this is freedom. At least, it is freedom to them; because, although it may be theoretically imperfect, it, nevertheless, corresponds to their highest notions of freedom. To secure this right of the people to judge of their own liberties against the government, the jurors are taken, (or must be, to make them lawful jurors,} from the body of the people, by lot, or by some process that precludes any previos knowledge, choice, or selection of them, on the part of the government. This is done to prevent the government's constituting a jury of its own partisans or friends; in other words, to prevent the government's packing a jury, with a view to maintain its own laws, and accomplish its own purposes. It is supposed that, if twelve men be taken, by lot, from the mass of the people, without the possibility of any previous knowledge, choice, or selection of them, on the part of the government, the jury will be a fair epitome of "the country" at large, and not merely of the party or faction that sustain the measures of the government; that substantially all classes of opinions, prevailing among the people, will be represented in the jury; and especially that the opponents of the government, (if the government have any opponents,) will be represented there, as well as its friends; that the classes, who are oppressed by the laws of the government, (if any are thus oppressed,) will have their representatives in the jury, as well as those classes, who take sides with the oppressor that is, with the government.