Pennsylvania Geology Final Report Volume 1 1981

LETTER OF TRANSMITTAL.
To His Excellency Governor Robert E. Pattison, Ex-
officio Chairman of the Board of Commissioners of the
Oeological Survey of Pennsyli)ania :
Sir : I have the lionor to submit to your approval this
First Volume of the Final ReiDort ordered by act of Legislature,
approved in June, 1891 ; being a Summary of the
results of the Survey from its beginning in June 1874 to
the close of its field work, June 1, 1890 ; since which date
office work has been continued for the completion of its
publications ; chiefly the last sheets of the Anthracite survey,
the maps and sections of the survey of the New Red
belt of Bucks and Montgomery counties, the completion of
the Bituminous colliery map of Western Pennsylvania,
and a new Geological State Map. These will be published
in the coming summer, together with the Second and Third
volumes of this Final Report.
In writing this Summary I have a
quoted from more than
hundred volumes of reports published by the Board
since 1875, a complete list of which, with an Index to their
subjects, will be found at the close of the third volume.
In every case I have given credit to and thrown responsibility
upon the assistant geologist who made the observation,
or rej^orted the fact quoted, by a reference in text
or foot note to date and page of his report.
Most of the illustrations are photo-electrotype reduc-
tions, and therefore fac-similes of the drawings made by
the assistant geologists, or in the office of the Surve}^
from their sketches, or from data in the text of their reports,
published in their reports during the course of the
Survey.
The smaller illustrations are grouped on page plates to