CATALOGUE OK OEMS. 6G7 



RvNTzovirs ( Henry ). TV (xeininis Hcriptiun oliin a ixn'ta (|U()(lam iiou infeliciter 

 irarniine re<l(litiun ft iiuik' jiriiuuin in Inceiu e<lituiii. 



Leipzig, l0(S5. 



A inaiiusicript on the properties and effects of precious stones attrilnited to 

 " Kvax, a King of the Arabs." 

 R.wirs (S. F. ). Specimen arabicuni, continensdescriptioneni et excerpta hbri Ach- 

 medis Teifaschii "De Gennnis et Lapidibus Pretiosis." 



Trajetuni ad Rhennm (Leyden), 1784. 

 Reyxaud (J.). Histoire elementaire des niineranx nsuels. 



Paris, 1867. 

 RoMicKTsoN (J. K. M. ). The occurrence of opals in central Australia and Queensland. 



[In Chem. News, LXV, 1882, i)p. 95, 101.] 

 . On the occurrence of opals in the colony of Queensland. 



[In Proc. Phil. Soc. Glasgow, XIII, p. 427.] 

 RosENMtJLLER (E. F. C. ). Mineralogy of the Biljle. 



[Translated by Repp and Morren.] Edinl)urgh, 1840. 

 Ross (W. A.). Pyrology. 



London, 1875. 



— . On the cause of the blue color of sapphire, la/.ulite, and lapis lazuli; the 



green color of emerald and the purple of amethyst. 



[In Chem. News, XL VI, 1882, p. ;W.] 

 Rothschild (M. D. ). Handl)ook of jirecious stones. 



New York, 1890. 

 Roy (C. W. Van). Ansichten iiber Knstehung und vorkommen des Bernsteins, so 

 wie praktische mittheilungen iiber den werth und die Behandlung desselben als 

 Ilandelsware. 



Dantzig, 184p. 

 RuuLER (F. W.). Agate and agate working. 



[In Pop. Science Rev., I (new series), p. 2.3.] 

 — — -. Artificial diamonds. 



[In Pop. Science Rev., IV, 1880, p. i:]6.] 

 . Diamonds. 



[In Science for All, II.] 

 . On jade and kindred stones. 



[In Pop. Science Rev., Ill, p. 337.] 

 Rudolph (A.). Die edeln metalle und Schmucksteine, mit 37 Tabellen. 



Breslau, 1858. 

 RiE (F. DE la). De Gemmis. 



Parisii (Paris), 1547. 



Other editions: Lugd., 1622; Franc, 1626; Gron., 1626. 

 RuENs (F. ). De Gemmis aliquot, iis praesertim quarum Divus Joannes Apostolus in 

 sua Apocalypsi notavit. 



Paris, 1547. 

 RuLANDUs (M.). Medicina Practica. 



Arg. (Strasburg), 1564. 

 . Lexicon Alchemize. 



Frankfurt, 1661. 



First ed. dated 1612. The author, a physician to Rudolph II of Germany, 

 gives several receii)ts for the develoj)ment of the occult and medi(!inal properties 

 of gems. 

 RusKiN (J.). On the heraldic meaning of precious stones. 



[In his lecture before the London Institute, Feb., 1876.] 

 Sandius (Christopher). On the origin of pearls. 



[In Phil. Trana.: Abr., II, p. 126, 1674.] 



