WALCOTT, CHARLES DOOLITTLE, an American scientist, born in New York Mills, N. Y., in 1850. He was educated in the public schools of Utica, N. Y., and received honorary degrees from a num ber of American and foreign universi ties. He early in life began to devote himself to geological research. In 1876 he became assistant in the New York State Survey. In 1879 he became assist ant geologist of the United States Geo logical Survey, making the Cambrian rocks and faunas of the United States his especial subjects of inquiry, the re sults of which he presented before the International Geological Congress, at London, in 1888. From 1889 to 1893 he was paleontologist in charge of inverte brate paleontology; from 1893 to 1894 geologist in general charge of geology and paleontology; from 1894 to 1907 director of the United States Geological Survey. In 1892 he became honorary curator of the department of paleontol ogy at the National Museum, and in 1907 secretary of the Smithsonian In stitution, Washington, D. C. From 1902
to 1905 he was also secretary of the Carnegie Institution, Washington, being also a member of its Board of Trustees. From 1905 to 1907 he was director of the United States Reclamation Service. He was also at various times a member and an officer of the National Academy of Sciences, and of many other domestic and foreign scientific associations. Be sides many reports and papers on geo logical and paleontological subjects, he also wrote "The Trilobite"; "Paleontol ogy of the Eureka District"; "The Cam brian Faunas of North America"; "The Fauna of the Lower Cambrian or Olenellus Zone"; "Pre-Cambrian Fos siliferous Formations"; "Correlation Papers"; "Cambrian Geology and Pale ontology"; "Cambrian Brachiopoda"; "The Cambrian Faunas of China"; "The Cambrian and Its Problems in the Cor dilleran Region"; "Pre-Cambrian Algon kian Algal Flora"; "Discovery of Algon kian Bacteria"; "Evidences of Primitive Life"; "Appendages of Trilobites."