Note 255 — V On Ominous and Luminous Stones
Reading edition
See Kunz, “The Phosphorescence of the Diamond,” Trans. N. Y. Academy of Sciences, vol. x, p. 50, 1890-91; Kunz and Baskerville, “The Action of Radium, Actinium, Roentgen rays, and Ultra Violet Light in Minerals and Gems,” Science, vol. xviii, No. 468, pp. 769-783, December 18, 1903.