Dr.
Archibald Bruce (1777-1818), the first scientific mineralogist in
America, and founder of the _American Mineralogical Magazine_ (1810),
was born in New York city, son of Dr. William Bruce, head of the
medical department of the British Armies. Henry Darwin Rogers
(1808-66), born in Philadelphia of Ulster Scot parentage, Professor of
Geology and Mineralogy in the University of Pennsylvania, State
Geologist of Pennsylvania, published important works on the geology of
Pennsylvania and New Jersey. He removed to Edinburgh in 1855 and three
years later became Professor of Natural History in the University of
Glasgow. His elder brother, William Barton Rogers (1804-1882), was
also a distinguished physicist and geologist. David Dale Owen
(1807-60), born in Lanarkshire, was brought to the United States by
his father in 1823. In 1848 he took charge of the Geological Survey of
Wisconsin and Iowa, and that of Minnesota in 1852. His brother,
Richard Owen (1810-90), also born in Lanarkshire, had a distinguished
career in this country as a geologist. J. Peter Lesley (1819-1903),
also of Scottish descent, was another distinguished geologist who by
his researches and surveys in Pennsylvania, vastly aided in the
economic development of that state. Persifor Frazer (1844-1909), son
of John Fries Frazer and great-grandson of Lieutenant-Colonel Persifor
Frazer of Revolutionary times, was author of the Geological Survey of
Pennsylvania (5 vols.) William John McGee (1853-1912), geologist and
anthropologist, claimed descent from the MacGregors.
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