Abstract
THE first volume gives the geographical results of the mission presided over by Captain Tilho (which undertook, in connection with British delegates, a delimitation of the Anglo-French frontier in the region of Lake Chad and northern Nigeria). The main purport of this volume is the survey and delineation of that extraordinarily puzzling feature in African geography, Lake Chad—a “lake” described by Captain Tilho as being nothing but an immense marsh with variable stretches of open water nowhere more than 12 feet deep.
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References
République Francaise. Ministère des Colonies. "Documents scientifiques de la Mission Tilho" (1906–9). First Volume. Pp. lx + 412 and Cartes. (Paris, Imprimérie nationale, 1910.)
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JOHNSTON, H. Lake Chad 1 . Nature 84, 244–245 (1910). https://doi.org/10.1038/084244a0
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DOI: https://doi.org/10.1038/084244a0