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Excerpt from Voyage en Algerie, ou Etudes sur la Colonisation de l'Afrique Francaise Le systeme landenieu repose immediatement sur la craie et correspond au terrain d'argile plastique du bassin de Paris. On y distingue deux etages. L'un inferieur, de formation marine (indique sur la carte par une teinte vermillon fonce), consiste en macignos (gres argilo-calcaires), psammites (gres schisteux), sables argileux plus ou moins consistants glaises, sables fins et argilites glau coniferes a la base desquels on trouve souvent des cailloux. L'autre superieur, . De formation fluvio-marine (teinte en vermillon pale) est compose de sables verdatres plus ou moins gros avec gres lignites et veines de glaise. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.

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