National Geographic : 1924 May
OUR MAP OF NORTH AMERICA THE National Geographic Society presents to its members as a sup plement to this number of their Magazine a new Map of North America in six colors, the ninth in its series issued since February, 1921, as supplements with the NATIONAL GEOGRAPHIC MAGA ZINE. Those previously issued as parts of The Magazine were the New Map of Europe showing the changes in bounda ries made by treaties following the World War, the New Map of Asia, the New Map of Africa showing the mandated colonial areas, the New Map of the World, and maps of South America, of the Islands of the Pacific, of the Coun tries of the Caribbean, and of the United States. The Society has distributed among its members, who now number 900,ooo, a total of 10,476,ooo copies of these maps. They have been received with remarkable enthusiasm, not only by members of The Society, but by map experts throughout the world and officials in many branches of the United States Government; and especially in schools and colleges through out the Nation. More than a year has been devoted to the compilation of the data for and the engraving of this Map of North America, which represents an outlay of $50,000, and has special features which no previ ously published map of this continent shows. More place names in the Polar regions are given and the islands to the north of Canada are shown in more detail than on any other single map sheet. Special care has been taken to show in great detail the coast of Alaska, so that when American aviators essay their de ferred flight to the Pole their bases may be readily identified. The Canadian portion of this map in corporates the latest information compiled by the Canadian Government, including recent surveys made in little-known por tions of the Dominion, and appreciative acknowledgment is here made to the De partment of the Interior of the Dominion for its valued cooperation. In order that the Map of North Amer ica might be free from the usual distortion attendant upon showing any large portion of the earth's surface, the Chief Cartog rapher of the National Geographic Society devised for this map a special projection which gives the true direction and true distance from the center of the map to every other point. This projection is in termediate between the conformal, which has scale errors, and the equal-area pro jection, which has distortion of form. The general elevation of the land is shown in flat colors, as on other maps of The Society, but in addition a special hachure plate is here used to show the general trend of the mountain ranges, thereby greatly improving the topographic aspects of the map. The more important railroads, particu larly the transcontinental lines, have been shown, but the automobile and park-to park highways and the location of our National Parks and Monuments and other features may be studied in greater detail on The Society's Maps of the United States and of the Countries of the Carib bean. Additional copies of the Map of North America may be obtained from the head quarters of the National Geographic Society, in Washington, D. C., at $I.oo each, for the paper edition, or $1.5o on linen, mailed postage free in the United States; foreign postage, 25 cents addi tional. Other maps of the series are available at the same prices, with the ex ception of the Map of the Islands of the Pacific, which may be obtained in paper for 50 cents and on linen for $I.oo. Notice of change of address of your GEOGRAPHIC MAGAZINE should be received in the office of the National Geographic Society by the first of the month to affect the following month's issue. For instance, if you desire the address changed for your July number, the Society should be notified of your new address not later than June first.