THOSE MILLS. We are gratified to learn that Messrs. Moody and Sawyer will commence the erection, at this place, of a Steam Saw Mill and Crist Mill during the present week. The engines are now on their way and are daily expected at St. Paul, whence they will be conveyed by land to Sauk Rapids. The saw mill is expected to be in successful operation by the first of July next, and the grist mill by the first of October.—When these mills are successfully running, we may confidently look for a change in the appearance of our town, as people will be able to push forward with their buildings which hitherto it has been impossible for them to do owing to the entire want of lumber. Go ahead gentlemen, we wait with impatience.