The text-book will probably be found to furnish all the material needed for the presentation of this period, with the possible exception of details of a biographical character. “The Heroes of the Nations” series contains good biographies of Gustavus Adolphus, by C. R. L. Fletcher; of Henry IV, by P. F. Willert, and of Cromwell, by Charles Firth. These may be supplemented by the volumes in the “Foreign Statesmen Series,” on Richelieu, by R. Lodge; on William the Silent, by Frederic Harrison, and on Philip II, by Martin Hume. The volumes in the “Epochs of Modern History Series,” which cover this period, The Thirty Years’ War and the Puritan Revolution, by S. R. Gardiner, furnish considerable supplementary information in a convenient and compact form. The best atlases are probably Putzger, and Gardiner (“Atlas of English History”). FOOTNOTE: [7] Cambridge Modern History, Vol. III. Preface. History in the Grades ARMAND J. GERSON, Editor. THE ADMISSION OF MISSOURI. A Type Lesson. Happily our pupils nowadays are no longer compelled to commit to memory lists of the states admitted during each administration. While we are all agreed as to the futility of this antiquated practice we must at the same time recognize that no pupil should leave our schools without a fairly definite idea of the process by which new states are created. This knowledge is essential to a comprehension of the present condition of the nation and of its development in the future. It is the purpose of the present article to show how a grasp of the process of admitting states may be developed by means of the story of the admission of some one typical state. Vermont and Kentucky at once suggest themselves because of the very early date of their formation. To these states, however, as to others admitted in the first few administrations, there is the objection that their admission was not typical of the process. This is due to their previous dependence upon or relation to some of the original states. Missouri, on the other hand, lying west of the Mississippi, may be said to typify most of the states subsequently admitted. Another reason for the choice of Missouri lies in the fact that our courses of study require us to present the subject of the Missouri Compromise, thus furnishing the best excuse in the world for developing in that connection our type-lesson on the admission of new states.