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at two or three horizons

*
back of map (90ºcw; levels 150 1.00 255)
at rear of Transactions of the Edinburgh Geological Society. Vol. VIII. Part I. (1901)
University of Michigan copy, digitized January 16, 2009

aside
opens to hidden map, Princeton copy, at Hathitrust
and click here for screengrab of Google scan of this page.

epigram ex p 16
 

14 April 2018

tags:
atmospherics; only; Transactions of the Edinburgh Geological Society (1901)