Joseph Leidy, A Natural Observer

The life of naturalist Joseph Leidy (1823-1891) was one of quiet dedication, but revolutionary achievement. He preferred to allow his research, published findings, and academic distinction to speak for him. When the modest father of paleontology in North America died in Philadelphia on April 30, 1891, local institutions quickly paid tribute. The Academy of Natural Sciences immediately passed a...
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Pennsylvania’s First State Geologist: Henry Darwin Rogers

Geology made Pennsylvania what it is today. The mining of anthracite and bituminous coal, the drilling for petroleum, and the production of iron and steel in the Commonwealth long drove the economy of the United States. Elucidating the history of the geological study of Pennsylvania is an integral part of comprehending its history. Henry Darwin Rogers (1808–1866), the first State Geologist of...
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