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TO SPEAK ON TOPOGRAPHY

Professor de Margerie to Lecture This Afternoon in Geological Lecture Room at 4.30 o'Clock

"The Topographical Map of France" will be the subject of the lecture which Professor Emmanuel de Margerie, Exchange Professor in Engineering and Applied Sciences from France, will deliver in the Geological lecture room at 1.30 o'clock this afternoon.

In his first lecture on the topography of France, Professor de Margerie will deal only with the work of the "Service Geographic de 1' Armee"--that is, military topography.

Professor de Margerie is one of the world's foremost authorities on the subject of topography. He was the director of the geological survey of Aisace-Lorraine, the past president of the Geological Society of France, a member of the French Academy of Sciences, and a well known writer on topographical subjects.

During the European War, Professor de Margerie had charge of the making of topographical maps in the war zone. Each map that was made was about 75 centimeters square and covered a space of 150 square kilometers on the terrain.

In addition Professor de Margerie will describe the method of cartography in Africa. He will illustrate his lecture by stereopticon slides showing reproductions of the maps from the eighteenth century to the present day, and also the types of instruments that were used in making these maps.

A short while ago Professor de Margerie delivered a lecture on topography and cartography before the U. S. War College in Washington.

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