Image from the Biodiversity Heritage Library.
Contributed by Yale Peabody Museum of Natural History.
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Transcription
Thursday June 2-1910
MARYLAND GEOLOGICAL SURVEY.
VOLUME I, PLATE XII.
W
E
VIEW OF "DEVIL'S BACKBONE" IN LEWISTOWN FORMATION,
NORTH OF CUMBERLAND, ON THE BALTIMORE & OHIO R. R.
10 on it drag has intahled
[illegible]
It seems to be a more [illegible] felsic. This
[illegible]
sme about 50 feet thick. Then a solid modula
dark flux
red and the modula in the layers for 25 feet