[10] Page 96.
[11] A single convex lens will answer the purpose, provided we hold the eye six or eight inches behind the image of the seal formed in its conjugate focus.
[12] See Edinburgh Transactions, vol. ix., p. 435.
[13] See Edinburgh Encyclopædia, Art. Steel, vol. xviii., p. 387.
[14] In the Sanscrit, says Baron Humboldt, the phenomenon of the Mirage is called Mriga Trichna, “thirst or desire of the antelope,” no doubt because this animal Mriga, compelled by thirst, Trichna, approaches those barren plains where, from the effect of unequal refraction, he thinks he perceives the undulating surface of the waters.—Personal Narrative, vol. iii., p. 554.
[15] See J. F. Gmelin’s Gottingischen Journal der Wissenchaften, vol. i., part iii., 1798.
[16] Edinburgh Journal of Science, No. xviii., p. 254.
[17] Private Journal of Captain G. F. Lyon. London, 1824, pp. 358, 361.
[18] Id. p. 366.
[19] See Edinburgh Encyclopædia, Art. Science, Curiosities in, Vol. xvii., p. 563.