Key points are not available for this paper at this time.
(1832). LXI. Observations on some remarkable optical phaenomena seen in Switzerland; and on an optical phaenomenon which occurs on viewing a figure of a crystal or geometrical solid. The London, Edinburgh, and Dublin Philosophical Magazine and Journal of Science: Vol. 1, No. 5, pp. 329-337.
L. A. Necker (Thu,) studied this question.