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The coal fields of Ohio, with a computation of the original coal content of the fields
No abstract available.
Authors
J. A. Bownocker, F. R. Clark
The divining rod: A history of water witching, with a bibliography
The use of a forked twig, or so-called divining rod, in locating minerals, finding hidden treasure, or detecting criminals is a curious superstition that has been a subject of discussion since the middle of the sixteenth century and still has a strong hold on the popular mind, even in this country, as is shown by the large number of inquiries received each year by the United States Geological Surv
Authors
Arthur Jackson Ellis
The Helderberg limestone of central Pennsylvania
This paper presents the results of a study made during 1913, 1914, and 1915, while the writer was a student at Johns Hopkins University. The formations discussed have been studies in Maryland, New Jersey, and New York, and described with more or less detail, but concerning their occurrence in the intervening area in Pennsylvania little exact information has been available. The conflict in opinion
Authors
John B. Reeside
The inorganic constituents of marine invertebrates
No abstract available.
Authors
F. W. Clarke, W. C. Wheeler
The physical conditions and age indicated by the flora of the Alum Bluff formation
The present paper has for its purpose the description of a small flora collected from the Alum Bluff formation, representing a horizon hitherto unrepresented paleobotanically in southeastern North America, and the discussion of the bearing of this flora on the physical conditions of deposition and the probable age of the deposits.
Authors
Edward Wilber Berry
The physical conditions indicated by the flora of the Calvert formation
The object of the present paper is to give a summary of the small flora preserved in the Miocene diatomaceous beds of the Calvert formation in the District of Columbia and Virginia, and more especially to discuss its bearing on the physical conditions of the Calvert epoch. Subsequent to the middle Eocene the next abundant marine fauna preserved along the middle Atlantic coast is that of the Calver
Authors
Edward Wilber Berry