GILBERT, Grove Sheldon, artist, born in Clinton, New York, 5 August, 1805; died in Rochester, New York, 23 March, 1885. He was educated at Middlebury academy, and for a time studied medicine. An early fondness for drawing had given him a desire to be an engraver, and at the age of twenty, seeing a portrait for the first time, he at once decided to become an artist. Subsequently obtaining some colors from a sign-painter, he made a portrait of his sister on the lid of a chest, which proved to be a capital likeness. For several years he painted in Fort Niagara and Toronto, finally settling in Rochester in 1834, where he afterward remained. He then devoted himself exclusively to portrait painting, and was eminently successful. In 1848 he was elected to honorary membership in the National academy of design, and in 1849 became an honorary member of the Albany academy of arts. --His son, Grove Karl, geologist, born in Rochester, New York, 6 May, 1843, was graduated at the University of Rochester in 1862, and subsequently devoted his attention to geology, being for a time associated with Professor Henry A. Ward, the naturalist, in Rochester. In 1869 he became a volunteer assistant on l he Ohio geological survey, and in 1871 received the appointment of geologist to the survey west of the 100th meridian under Lieutenant George M. Wheeler. Three years later he was made assistant geologist under Major John W. Powell in the geographical and geological survey of the Rocky mountain region, and held this appointment until July, 1879, when he became geologist to the United States geological survey, having charge at first of the division of the Great Basin, and more recently of the Appalachian division. He is a member of scientific societies, and was one of the vice-presidents of the American association for the advancement of science in 1887, having charge of the section on geology and geography. Mr. Gilbert was president of the American society of naturalists in 1885-'6, and in 1883 was elected a member of the National academy of sciences. He has been a large contributor to technical journals and to the proceedings of societies. His papers treat principally of the sculpture of the land by rain and rivers, the genesis of the topography of lake-shores, and the quaternary history of the Great Basin. Many of these have appeared in the volumes of the official reports of the Ohio and the government surveys. He wrote the " Report on the Geology of the Henry Mountains" (Washington, 1877), and edited and partially wrote the "Report on the Geology and Resources of the Black Hills of Dakota" (1880).