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336                  Bibliography
riety of garnet. [In Am. Jour. Science, v., 1898, p. 293; also vi., 1898, p. 463.]
Precious stones of the Bible; descriptive and symbolical. 1878.
Precious stones, cutting and polishing of. [In Mineral Industries (annual), p. 229, 1899.]
Prinz (W.). Les enclaves du Saphir, du Rubis, et du Spinelle. [In Bul. Soc. Belge. Microsc, 1882.]
Psellus (Michael Constantinus) . Le Lapidum Virtu-tibus. Lugundi Batavorum (Leyden), 1795.
Kagoumovsky (------). Distribution Technique des Pierres
précieuses, avec leurs caractères distinctifs. Vienne (Vienna), 1825.
Rambosson (------). Les Pierres précieuses.
Rantzovius (Henry). De Gemmis scriptum olim a poeta quodam non inféliciter carmine redditum et nunc pri-mum in lucem editum. Leipzig, 1585. A manuscript on the properties and effects of precious stones at­tributed to " Evax, a King of the Arabs."
Ravius (S. F.). Specimen arabicum, continens descrip-tionem et excerpta libri Achmedis Teifaschii " De Gemmis et Lapidibus Pretiosis." Trajetum ad Rhe-num (Leyden), 1784.
Reynaud (J.). Histoire élémentaire des minéraux usuels. Paris, 1867.
Robertson (J. K. M.). The occurrence of opals in central Australia and Queensland. [In Chem. News, Ixv., 1882, pp. 95. 101.]
------. On the occurrence of opals in the colony of Queens­land. [In Proc. Phil. Soc. Glasgow, xiii., p. 427.]
Ronton (Edward). Intaglio engravings, past and pre­sent. London: G. Bell and Sons, 1896. xii., 117, (2) pp. Illustrations. 16°.
Rosenmüller (Ε. F. C). Mineralogy of the Bible. [Translated by Repp and Morren.] Edinburgh, 1840.
Ross (W. Α.). Pyrology. London, 1875.
------. On the cause of the blue colour of sapphire, lazulite,
and lapis lazuli; the green colour of emerald and the purple of amethyst. [In Chem. News, xlvi., 1882, p· 33.]