Note 87 — OBSERVATIONS ON THE MINERALOGY AND GEOLOGY OF A PART OF THE UNITED STATES WEST OF THE MISSISSIPPI.
Reading edition
Humboldt's Personal Narrative, vol. iv. p. 171. 195. vol. v. p. 553.—James.
Reading edition
Humboldt's Personal Narrative, vol. iv. p. 171. 195. vol. v. p. 553.—James.