Brewster, David, Sir, 1781-1868, Bache, A. D. (Alexander Dallas), 1806-1867 · Philadelphia : Lea and Blanchard · leaf 225
s thetower, the latter appears curiously modified, part of it beingas it were cut off and brought down, so as to form anothersmall and elegant tower in the form of certain sepulchralmonuments. At other times it bears an exact resemblance toan ancient altar, the fire of which seems to burn with… … means of rays S E, P E passing in straight lines through atrack of air of uniform density lying between the ship and theeye. If the air is more rare at c than at a, which it may befrom the coldness of the sea below a, its refractive power will * Edinburgh Journal of Science, No. V. p. 13 CHAP.…
Optics
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