[378] Phil. Trans., vol. xcii., p. 378.

[379] Denkschriften, Bd. v., p. 202.

[380] Ibid., p. 220; Edin. Jour. of Science, vol. viii., p. 9.

[381] Denkschriften, Bd. v., p. 222.

[382] Arch. des Sciences, 1849, p. 43.

[383] Phil. Trans., vol. cl., p. 159, note.

[384] Ed. Phil. Trans., vol. xii., p. 528.

[385] Phil. Trans., vol. cxxvi., p. 453. "I conceive," he says, "that this result proves decisively that the sun's atmosphere has nothing to do with the production of this singular phenomenon" (p. 455). And Brewster's well-founded opinion that it had much to do with it was thereby, in fact, overthrown.

[386] Monatsberichte, Berlin, 1859, p. 664.

[387] Abhandlungen, Berlin, 1861, pp. 80, 81.