Image from the Biodiversity Heritage Library.
Contributed by Smithsonian Institution Archives.
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Transcription
20
SWy sinking Spring
W? Hrmal adjuster ?r ?ch?
Thin cherty layer
14 ft {massive
Cima Bisherargia.
1\2 to interval limestone.
5 ft indurated clay rock
16\2 in terol sand.
Bridge.
The richy fossiliferous
Bisher limestones occur
between 5' \2