The acts of the last session of Congress, on the subject of Indian affairs, have introduced important changes into those relations. Many of the provisions of former laws had become inappropriate or inadequate, and not suited to the changes which time and circumstances had made. In the act regulating the intercourse with the various tribes, the principles of intercommunication with them are laid down, and the necessary details provided. In that for the re-organization of the department, the number of officers employed has been much reduced, and the current expenses diminished. Any changes which experience may show to be necessary in these acts, can from time to time be provided, until they shall become fully adapted to the situation and condition of the Indians, and to the intercourse, both commercial and political, which ought to exist between them and our government and citizens. The system of removal has changed essentially the prospects of the emigrants, and has imposed new obligations upon the United States. A vast tract of country, containing much more than one hundred millions of acres, has been set apart for the permanent residence of these Indians, and already about thirty thousand have been removed to it. The government is under treaty stipulations to remove nearly fifty thousand others to the same region, including the Illinois and Lake Michigan Indians, with whom a conditional arrangement has been made. This extensive district, embracing a great variety of soil and climate, has been divided among the several tribes, and definite boundaries assigned to each. They will there be brought into juxta-position with one another, and also into contact, and possibly into collision, with the native tribes of that country; and it seems highly desirable that some plan should be adopted for the regulation of the intercourse among these divided communities, and for the exercise of a general power of supervision over them, so far as these objects can be effected consistently with the power of Congress, and with the various treaty stipulations existing with them. It is difficult, indeed, to conceive how peace can be preserved, and the guaranty of protection held out to the eastern Indians fulfilled, without some legislative provision upon this subject. LEW. CASS. CONDITION OF THE ARMY. _Extract from the Report of the Major-General of the Army._ Since my last annual report, the five companies of the regiment of dragoons, which remained to be raised, have been recruited; and, after having been organized at Jefferson barracks, they took up their march to Fort Gibson, where the head-quarters of the regiment were established, preparatory to entering the Indian country, in conformity to your instructions.