This portentous agitation, destined to act so seriously on the harmony, and possibly on the stability of the Union, requires to be noted in its different stages, that responsibility may follow culpability, and the judgment of history fall where it is due, if a deplorable calamity is made to come out of it. In this point of view the movements for and against slavery in the session of 1837-'38 deserve to be noted, as of disturbing effect at the time; and as having acquired new importance from subsequent events. Early in the session a memorial was presented in the Senate from the General Assembly of Vermont, remonstrating against the annexation of Texas to the United States, and praying for the abolition of slavery in the District of Columbia--followed by many petitions from citizens and societies in the Northern States to the same effect; and, further, for the abolition of slavery in the Territories--for the abolition of the slave trade between the States--and for the exclusion of future slave States from the Union. There was but little in the state of the country at that time to excite an anti-slavery feeling, or to excuse these disturbing applications to Congress. There was no slave territory at that time but that of Florida; and to ask to abolish slavery there, where it had existed from the discovery of the continent, or to make its continuance a cause for the rejection of the State when ready for admission into the Union, and thus form a free State in the rear of all the great slave States, was equivalent to praying for a dissolution of the Union. Texas, if annexed, would be south of 36° 30', and its character, in relation to slavery, would be fixed by the Missouri compromise line of 1820. The slave trade between the States was an affair of the States, with which Congress had nothing to do; and the continuance of slavery in the District of Columbia, so long as it existed in the adjacent States of Virginia and Maryland, was a point of policy in which every Congress, and every administration, had concurred from the formation of the Union; and in which there was never a more decided concurrence than at present. The petitioners did not live in any Territory, State, or district subject to slavery. They felt none of the evils of which they complained--were answerable for none of the supposed sin which they denounced--were living under a general government which acknowledged property in slaves--and had no right to disturb the rights of the owner: and they committed a cruelty upon the slave by the additional rigors which their pernicious interference brought upon him.