With a view to these important objects, I submit to the consideration of the Congress the propriety of enlarging both the corps of engineers--the military and topographical. It need scarcely be remarked that the more extensively these corps are engaged in the improvement of their country, in the execution of the powers of Congress, and in aid of the States in such improvements as lie beyond that limit, when such aid is desired, the happier the effect will be in many views of which the subject is perceptible. By profiting of their science the works will always be well executed, and by giving to the officers such employment our Union will derive all the advantage, in peace as well as in war, from their talents and services which they can afford. In this mode, also, the military will be incorporated with the civil, and unfounded and injurious distinctions and prejudices of every kind be done away. To the corps themselves this service can not fail to be equally useful, since by the knowledge they would thus acquire they would be eminently better qualified in the event of war for the great purposes for which they were instituted. Our relations with the Indian tribes within our limits have not been materially changed during the year. The hostile disposition evinced by certain tribes on the Missouri during the last year still continues, and has extended in some degree to those on the Upper Mississippi and the Upper Lakes. Several parties of our citizens have been plundered and murdered by those tribes. In order to establish relations of friendship with them, Congress at the last session made an appropriation for treaties with them and for the employment of a suitable military escort to accompany and attend the commissioners at the places appointed for the negotiations. This object has not been effected. The season was too far advanced when the appropriation was made and the distance too great to permit it, but measures have been taken, and all the preparations will be completed to accomplish it at an early period in the next season. Believing that the hostility of the tribes, particularly on the Upper Mississippi and the Lakes, is in no small degree owing to the wars which are carried on between the tribes residing in that quarter, measures have been taken to bring about a general peace among them, which, if successful, will not only tend to the security of our citizens, but be of great advantage to the Indians themselves.