This is pretty cool. The Royal Society, the world’s first peer-reviewed journal has opened their archives to the public. Approximately 60,000 articles are dating back as far as the 1600s are available via a searchable archive.
Included in this archive is early geological work from Charles Darwin which features incredible sketches and maps.
The text is 47 pages long, but thankfully there is a short(ish) abstract also available
. The paper details Darwin’s study of lineaments, referred to as “roads” along Glen Roy and Lochaber. Previous authors concluded that the lineaments are lacustrine deposits from a time when lake levels were higher (Darwin 1837). Darwin goes on to put forth his theory for the lineaments: marine deposits made by uplift of the land, with a subsiding sea, subject to tides carving the valleys (Darwin 1837).
Observations on the Parallel Roads of Glen Roy, and of other Parts of Lochaber, with an Attempt to Prove That They Are of Marine Origin.Proc. R. Soc. Lond. 1837 4:127–129; doi:10.1098/rspl.1837.0057