Pennsylvania Polymath: Samuel Stehman Haldeman

Samuel Stehman Haldeman was a pioneer in American science with an uncompromising empirical bent who made definitive contributions in geology, metallurgy, zoology and the scientific study of language. His groundbreaking lifework touched nearly seven decades of science and included identification of one of the oldest fossils in Pennsylvania, elucidation of a plan for an anthracite coal furnace for...
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Celebrating a Century and a Half: The Geologic Survey

The Pennsylvania Geo­logical Survey, offi­cially known today as the Bureau of Topo­graphic and Geologic Survey, and one of the bureaus of the Department of Environmental Resources, is one of only a very few of the Common­wealth’s executive branch agencies whose history can be traced to the first half of the nineteenth century. Created in 1836, the survey spawned three subsequent geologic...
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From the Editor

Because each edition of the magazine has a long lead time – from manuscript development and illustration acquisition to final design and printing – it’s sometimes challenging to write about a season that’s several months in the future. The nor’easter in late October that deposited nearly a foot of snow on parts of central Pennsylvania – and brought the Weather...
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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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