Prefatory Note by the Glacial Committee

The “Maps of the Pleistocene glaciations” and the accompanying report by Dr. Ernst Antevs were presented in preliminary form before a joint session of the American Association for the Advancement of Science and the Geological Society of America, held in New York on December 27, 1928. The occasion was a symposium on “The centenary of the glacial theory,” which constituted a part of the program of the annual meeting of these and affiliated societies.

As early as April, 1928, Prof. Henry Fairfield Osborn, President of the American Museum of Natural History and of the American Association for the Advancement of Science for 1928, requested that special maps of the Pleistocene glaciations of the Northern Hemisphere be prepared for presentation at the meetings held during Christmas week. To facilitate the preparation of these maps he appointed a committee consisting of Prof. Frank Leverett of the United . . .

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