'RECONSTRUCTION.--Since we have been at the trouble of conquering the rebels in the State of Arkansas--since, after many great victories, we have now complete military possession of the State, and have armies posted on its eastern, western, and northern lines, and at its capital in the centre--we think it would be worth while in the Government to take steps to reorganize the civil administration there, and inaugurate a system of policy such as was adopted in Missouri two years ago, and which has proved so successful in pacifying that State. The loyal element in Arkansas is large, as is made evident by the action of the people wherever our forces have penetrated, and by the enlistment of a good number of its citizens in the armies of the Union. One of the Senators from Arkansas, Senator Sebastian, whose term of office is as yet unexpired, is, and always has been, we believe, a sound loyal man; and Mr. Gantt, who was elected to Congress just before the outbreak of the rebellion, has recently given proof of his repentance and devotion to the Union in the remarkable address which we published last week. We do not see why the process of reconstruction might not be at once commenced in Arkansas, and why, before the close of next session, the State might not have a full congressional delegation in Washington.' Not a word is here said of the important question of Slavery. The proposition is pure and simple to readmit the rebellious State of Arkansas to the Union, upon precisely the same footing as that upon which we retained the allegiance of Missouri--to treat, in other words, loyal and rebellious States in the same way. In a subsequent article of the same able journal, one of the organs of the Republican party, this easy-going policy, the _laissez-faire_ of statesmanship, is expanded at large, and explicitly adopted and recommended. The appearance of such an article in such a quarter is such a remarkable index of the existence in the public mind of the delusions we are exposing, that we transfer it bodily to our columns, for the sake of commenting upon its positions. Calhoun's famous expression, 'masterly inactivity,' is significantly adopted as a caption: 'CIVIL POLICY TOWARD SLAVERY.--There is a class of men who stick to the idea that something positive must be done by the Federal Government to end slavery. Even the issue of the Emancipation Proclamation, a military measure for military ends solely, does not satisfy them. They want civil power exercised, and would gladly have even a breaking down of State lines and a reconstruction of the Government itself, as the only effectual means of destroying the institution of their special abhorrence.