📕 Excerpt from Annales de la Société Géologique du Nord, 1878-1879, Vol. 6III. Deladerrière, Avocat. Rue de Paris, 114, Valenciennes. Deleplanque, Directeur du Musée d'histoire naturelle à Douai. Dele'i'angt Jules, 67, Place de la Gare, à Charleville (ardennes). Desailly, Ingénieur aux Mines de Liévin, par Lens.About the PublisherForgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.comThis 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.