“…a comet would destroy Earth…”
Reynold’s Newspaper (London, England), April 26, 1857, p. 12. The other is, I believe, a translation of the story alluded to from La Presse, but I don’t have an exact date for it.
“…in 1832…”
Irving, E. (1829). A tale of the times of the martyrs. Edinburgh, p. 762.
“…the Anti-Development Theory…”
The Chicago Tribune (Chicago, IL), April 22, 1857, p. 2.
“…a body of infinite lightness…”
The Daily News (London, England), April 13, 1857, p. 3.
“…but a few ounces.”
From La Presse. See “…a comet would destroy Earth…,” above.
“…visible myths.”
The Chicago Tribune (Chicago, IL), April 22, 1857, p. 2.
“…Giovanni Battista Donati.”
“Giovanni Battist Donati, 1826-1873,” B. Hetherington, Journal of the British Astronomical Association, Vol. 83, p. 462.
“A faint, curved extremity…”
The New York Times, October 11, 1858, p. 1.