"By a statute of Maryland of 1796, all slaves brought into that State to reside are declared free; a Virginian-born slave is carried by his master to Maryland; the master settled there, and keeps the slave there in bondage for twelve years, the statute in force all the time; then he brings him as a slave to Virginia, and sells him there. Adjudged, in an action brought by the man against the purchaser, that he is free." Judge Kerr, in the case, says: "Agreeing, as I do, with the general view taken in this case by my brother Green, I would not add a word, but to mark the exact extent to which I mean to go. The law of Maryland having enacted that slaves carried into that State for sale or to reside shall be free, and the owner of the slave here having carried him to Maryland, and voluntarily submitting himself and the slave to that law, it governs the case." In every decision of a slave case prior to that of Dred Scott _v._ Emerson, the Supreme Court of Missouri considered it as turning upon the Constitution of Illinois, the ordinance of 1787, or the Missouri compromise act of 1820. The court treated these acts as in force, and held itself bound to execute them, by declaring the slave to be free who had acquired a domicil under them with the consent of his master. The late decision reversed this whole line of adjudication, and held that neither the Constitution and laws of the States, nor acts of Congress in relation to Territories, could be judicially noticed by the Supreme Court of Missouri. This is believed to be in conflict with the decisions of all the courts in the Southern States, with some exceptions of recent cases. In Marie Louise _v._ Morat et al., (9 Louisiana Rep., 475,) [Transcriber's Note: correct citation is Louise v. Marot, 9 La. 473] it was held, where a slave having been taken to the kingdom of France or other country by the owner, where slavery is not tolerated, operates on the condition of the slave, and produces immediate emancipation; and that, where a slave thus becomes free, the master cannot reduce him again to slavery. Josephine _v._ Poultney, (Louisiana Annual Rep., 329,) "where the owner removes with a slave into a State in which slavery is prohibited, with the intention of residing there, the slave will be thereby emancipated, and their subsequent return to the State of Louisiana cannot restore the relation of master and slave." To the same import are the cases of Smith _v._ Smith, (13 Louisiana Rep., 441; Thomas _v._ Generis, Louisiana Rep., 483; Harry et al. _v._ Decker and Hopkins, Walker's Mississippi Rep., 36.) It was held that, "slaves within the jurisdiction of the Northwestern Territory became freemen by virtue of the ordinance of 1787, and can assert their claim to freedom in the courts of Mississippi." (Griffith _v._ Fanny, 1 Virginia Rep., 143.) It was decided that a negro held in servitude in Ohio, under a deed executed in Virginia, is entitled to freedom by the Constitution of Ohio.