Note 2 — Chapter VI · PLUTONIC AND METAMORPHIC ROCKS:—CLEAVAGE AND FOLIATION.
Reading edition
“Geological Section of the Brit. Assoc.,” 1840. For Sir R. Schomburgk’s observations see Geograph. Journal, 1842, p. 190. See also Humboldt’s discussion on Loxodrism in the “Personal Narrative.”