Mr. BANCROFT is not, as we were led by some newspaper to state in the _International_, engaged in printing his History of the Revolution; and when he does give it to the press, it is by no means likely that he will have to leave New-York to find a publisher for it. The History of the Colonization of America--introductory to the History of the United States--has secured for Mr. Bancroft a place among the greatest historians; he has now the assurance that he is writing for other ages; and he will not endanger his fame, nor fail of the utmost perfection in his work, for any needless haste. This second part of his History will probably occupy five volumes; and although the story has been written by many hands, with more or less fulness and various degrees of justice, Mr. Bancroft will have studied it from beginning to end in the original materials, of which his collection is by far the best that has ever been made. If upon this field any one successfully competes with him for the historic wreath, he must come after him, and be guided by his light. * * * * * HENRY R. SCHOOLCRAFT, LL. D., is occupied, as his official duties permit, in the composition of memoirs of his long and honorably distinguished life. His great work upon the History and Condition of the Indians, now in press, and to be published in some half-dozen splendid quarto volumes by Lippencott, Grambo & Co., of Philadelphia, will contain the fruits of his observations in that department which he has made so peculiarly his own, and upon which he will always be the chief and highest authority; but his personal adventures, and his reminiscences of his contemporaries, will form the subject of this additional performance. * * * * *