Coal Fields Of Pennsylvania Research Articles

Appendix. — Analysis of Specimens of Bituminous and Anthracitic Coal of the United States, and of the Plumbaginous Anthracite alluded to in the foregoing Paper

In the transactions of the Association of American Geologists, 1840–42, p. 470., Professor H. D. Rogers traces the gradation in the proportion of volatile matter m the coal, as we cross the Appalachian basin from the S. E. towards the N. W. In the most southeasterly basins, where the coal is a genuine anthracite, he states that the quantity of gaseous matter, chiefly hydrogen, varies from 6 to 14 per cent., as, for example, in the anthracite coal fields of Pennsylvania.