ARCHIAC, ETIENNE JULES ADOLPHE DESMIER DE SAINT SIMON, VICOMTE D' (1802-68), French geolo gist, was born at Reims Sept. 24 1802, and died Dec. 24 1868. He wrote a Histoire des progres de la geologic 1834-59 (Paris, 1847-60). He was appointed (1861) professor of palaeontology in the Museum of Natural History in Paris. He made important contributions to Tchihatcheff's Asie mineure (1866).