Original journals of the Lewis and Clark Expedition, 1804-1806 printed from the original manuscripts in the library of the American Philosophical Society and by direction of its committee on historical documents |
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 | V. Mineralogy Original journals of the Lewis and Clark Expedition, 1804-1806 |  |
[The following note is found on the back fly-leaf of Codex
R, in Lewis's hand.]
Sep. 20th.
on the lard. shore at the commencement of the big bend observed a
clift of black porus rock which resembled Lava tho' on a closer examination
I believe it to be calcarious and an imperfect species of the
French burr preserved a specemine, it is a brownish white, or black
or yellowish brown.
| V. Mineralogy Original journals of the Lewis and Clark Expedition, 1804-1806 | |