Four years of war, during which law was executed only at the point of the bayonet throughout the States in rebellion, have left the people possibly in a condition not to yield that ready obedience to civil authority the American people have generally been in the habit of yielding. This would render the presence of small garrisons throughout those States necessary until such time as labor returns to its proper channel, and civil authority is fully established. I did not meet any one, either those holding places under the government or citizens of the southern States, who think it practicable to withdraw the military from the south at present. The white and the black mutually require the protection of the general government. There is stick universal acquiescence in the authority of the general government throughout the portions of country visited by me, that the mere presence of a military force, without regard to numbers, is sufficient to maintain order. The good of the country, and economy, require that the force kept in the interior, where there are many freedmen, (elsewhere in the southern States than at forts upon the seacoast no force is necessary,) should all be white troops. The reasons for this are obvious without mentioning many of them. The presence of black troops, lately slaves, demoralizes labor, both by their advice and by furnishing in their camps a resort for the freedmen for long distances around. White troops generally excite no opposition, and therefore a small number of them can maintain order in a given district. Colored troops must be kept in bodies sufficient to defend themselves. It is not the thinking men who would use violence towards any class of troops sent among them by the general government, but the ignorant in some places might; and the late slave seems to be imbued with the idea that the property of his late master should, by right, belong to him, or at least should have no protection from the colored soldier. There is danger of collisions being brought on by such causes. My observations lead me to the conclusion that the citizens of the southern States are anxious to return to self-government, within the Union, as soon as possible; that whilst reconstructing they want and require protection from the government; that they are in earnest in wishing to do what they think is required by the government, not humiliating to them as citizens, and that if such a course were pointed out they would pursue it in good faith. It is to be regretted that there cannot be a greater commingling, at this time, between the citizens of the two sections, and particularly of those intrusted with the law-making power.