Note 2 — THE GATHERER.
Reading edition
Footnote 2
:
(return)
If I may be allowed to offer a conjecture on the cause of this singular white veil, or cloud, I can only attribute it to the vapour of water which escapes from the earth from the heated mass below, and which is condensed on rising into the cold air, and thus rendered visible. Bogota, according to my measurement, which corresponds very nearly with that of Baron Humboldt, is 9,600 feet above the level of the sea, and is distant at least one hundred miles from any known volcano.]