LAPPARENT

lapparent, albert auguste cochon de (1839-1908), french geologist, was born at bourges on the 30th of december 1839. after studying at the ecole polytechnique from 1858 to 1860 he became _ingenieur au corps des mines_, and took part in drawing up the geological map of france; and in 1875 he was appointed professor of geology and mineralogy at the catholic institute, paris. in 1879 he prepared an important memoir for the geological survey of france on _le pays de bray_, a subject on which he had already published several memoirs, and in 1880 he served as president of the french geological society. in 1881-1883 he published his _traite de geologie_ (5th ed., 1905), the best european text-book of stratigraphical geology. his other works include _cours de mineralogie_ (1884, 3rd ed., 1899), _la formation des combustibles mineraux_ (1886), _le niveau de la mer et ses variations_ (1886), _les tremblements de terre_ (1887), _la geologie en chemin de fer_ (1888), _precis de mineralogie_ (1888), _le siecle du fer_ (1890), _les anciens glaciers_ (1893), _lecons de geographie physique_ (1896), _notions generales sur l'ecorce terrestre_ (1897), _le globe terrestre_ (1899), and _science et apologetique_ (1905). with achille delesse he was for many years editor of the _revue de geologie_ and contributed to the _extraits de geologie_, and he joined with a. potier in the geological surveys undertaken in connexion with the channel tunnel proposals. he died in paris on the 5th of may 1908.