Page:Second Geological Survey of Pennsylvania Report of Progress PPP.djvu/7

SECOND GEOLOGICAL SURVEY OF PENNSYLVANIA.
REPORT OF PROGRESS.

PPP.

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CERATIOCARIDÆ
FROM THE
UPPER DEVONIAN MEASURES
IN WARREN COUNTY,

BY
Chas. E. Beecher.

With 2 plates.

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EURYPTERIDÆ
FROM THE
LOWER PRODUCTIVE COAL MEASURES
IN BEAVER COUNTY,
AND THE
LOWER CARBONIFEROUS, PITHOLE SHALE,
IN VENANGO COUNTY,

BY
James Hall.

With 6 plates.

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HARRISBURG:
PUBLISHED BY THE BOARD OF COMMISSIONERS
FOR THE SECOND GEOLOGICAL SURVEY.
1884.