Human progress in this country, during the past ten years, has taken giant strides, although met by obstacles of a character so formidable as to impose a most extraordinary task upon those engaged in the great work of social reform and the establishment of the rights of all to civil, religious and political liberty, as guaranteed by the Constitution. The spirit of the age is reformatory. Religion, politics, art and the sciences have ever been the subjects of reformation and progression, and by these have been lifted from comparative darkness in the past to the broad fields of light in the more intelligent present. In the grand plan of an all-wise Creator, nothing has been allowed to permanently obstruct the onward march of the races and nations of the earth; and for the accomplishment of this glorious purpose, no sacrifice, it appears, has been deemed too great that would aid in its fulfillment. The travail and labor of nations, the desolation and destruction of whole communities, and in some instances the entire annihilation of races of men, have been the penalties demanded and paid for their long persistence in the ways of sin and wickedness. The American Republic has been no exception to the imperative rule. It bore within its folds the crime and curse of slavery, a foul and corroding ulcer that could only be burned out and destroyed by the terrible visitations of fire and the sword, and in the eradication of which all the wisdom of the nation's greatest counselors, all the terrible enginery of modern warfare, and the skill and persistence of the chosen leaders of the people were to be brought into requisition. A fierce and sanguinary contest of four years' duration ended, under the hand of God, in the grand triumph of the right; but the war of the rebellion left the South in a state of social disintegration, in which the leading spirits who had fomented the internecine contest assumed to control the masses, and perpetuate under another form, and accomplish by other means, that which had been lost to them in the surrender and disorganization of their armies. The condition of the South, during the past twelve years, is vividly illustrated in a series of letters written by Mr. Justin Knight, a gentleman of undoubted integrity, a resident of the South during the period referred to, and which are here given in a narrative form for the better convenience of the reader. Speaking of himself and the peculiar circumstances that brought him to the Southern States, Mr. Knight says: "Born in close proximity to the metropolis of New England, where I received the advantages of a collegiate education, and the religious instruction of parents who, without bigotry, were opposed to every species of wrong, I early conceived a desire to enter upon the ministry, which I did in 1857, almost immediately after the close of my collegiate life.