Image from the Biodiversity Heritage Library.
Contributed by American Museum of Natural History Library.
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Transcription
+ shale. Grotto is uncommon
in that it has ice & frost in it
all summer although at sea level
& exposed to eastern sun.
39-4 Cliff section showing
contact between shale
& overlying diabase or basalt.
P. Freeman as scale.
39-[5] Fault zone in shales-
P. Freeman as scale.
39=6
Left got boat free & started
at 11 a.m.
Northumberland Shale is large
thick
ophical presents some interesting
geology. Saw one great dike cutting
from bottom to top of sea slope from
late hand.
Worsed entrance to bridge-