The great merit of a wall map consists in its size, which makes possible the depicting on a large scale of the things which can be represented upon a map, with the further capital advantage that such a map can be seen by a great many people at the same time. Its superiority over the atlas lies then, not in accuracy, or wealth of detail, but in its visibility. For this there is absolutely no substitute; and this advantage, which for the teacher is almost the only one, secures for the wall map a place among the indispensables in classroom equipment. They can be made to represent anything that any map can, though their special province is the exhibition of general facts where minute details are negligible. In fact, the encumbering of a large map with a multitude of names and other data is the cardinal sin of the cartographer. The two broad classes of facts put upon maps are political and physical, and almost always in combination, as neither one has very much meaning without the other. Let us take up the physical maps first, as they offer the greatest difficulties, are the most expensive, and in consequence, are most rarely found of a satisfactory character. The trouble with a physical map is that it has the impossible task of showing physical features as they are and so that they can be seen. This is impossible, because if things are shown in their right proportions, and if such natural features as rivers and mountains were drawn true to scale they would appear in most cases as nothing more than faint lines and specks upon the map. As it is absolutely necessary that they be seen clearly at some distance, a gross exaggeration of their apparent size is made necessary. These difficulties are successfully compromised in a series well known in the United States, published by the house of Perthes, and known as the Sydow-Habenicht series. In their color scheme, omission of unnecessary details and general mechanical excellence, they are so satisfactory that they have come to be something like the standard maps for the continents. Their great English competitor is Stanford’s new series of orographical school maps, compiled under the direction of the well-known writer, H. J. Mackinder. Of an equally high character and worked out with somewhat greater elaboration of details are some of the maps of W. & A. K. Johnston, and the series of physical maps published in America by the Rand-McNally Company. Before leaving the subject of physical wall maps, I want to say a word of commendation of the maps of Dietrich Reimer, of Berlin, prepared by Richard Kiepert. The classical maps of Henry Kiepert, published by the same house, are seen in nearly every high school in the country, but the work of Richard Kiepert is altogether too little known. Owing to the influence of mere personal taste one should be very cautious about stating their preferences too confidently while attempting to discriminate between a number