DERBY 39 



vista de Engenharia, No. 186, 28 de Maio de 1888; X, 111-114; No. 187, 

 14 de Junho de 1888; X, 121-123; No. 188, X, 133-136. Rio de Janeiro, 

 1888. 

 DERBY, O. A.: Relatorio apresentado ao Visconde do Parahyba pela Com- 

 niissao geographica e geologica da Provincia de Sao Paulo. 11-28. Sao 

 Paulo, 1888. 

 DERBY, O. A.: Ueber Spuren einer carbonen Eiszeit in Slidamerika. Neues 



Jahrbuch fur Mineralogie, II, 172-176. Stuttgart, 1888. 

 DERBY, O. A.: Notas sobre os meteorites Brazileiros. Revista do Observa- 

 torio do Rio de Janeiro, 1888, III, No. I, 3-6; No. II, 17-20; No. Ill, 33-77. 

 Abstract: Amer. Jour. ScL, 3d series, XXXVI (CXXXVI), 157. New 

 Haven, 1888. Abstract of abstract in Amer. Jour. Sci,, Neues Jahrbuch 

 fur Mineralogie, II, 281, 1889. (Referate.) 

 DERBY, O. A.: On tbe occurrence of Monazite as an accessory element In 

 rocks. Amer. Jour. Sci., CXXXVII, 109-113. New Haven, 1889. Abstract : 

 Bull. Soc. Frangaise de Mineralogie, XII, 508. Paris, 1889. Abstract: 

 Zeitschrift fur Krystallographie und Mineralogie (Groth), XIX, 78. Leip- 

 zig, 1891. 

 DERBY, O. A.: Retrospecto bistorico dos trabalhos geograpbicos e geologicos 

 effectuados na Provincia de S. Paulo. Boletim. No. 1 da Commissao Geo- 

 grapbica e Geologica da Provincia de S. Paulo. 26 pp. 8°. Sao Paulo, 

 1889. 

 DERBY, O. A.: Relatorio da Commissao Geograpbica e Geologica da Pro- 

 vincia de Sao Paulo, 5-42. Sao Paulo, 1889. 

 DERBY, O. A.: Os picos altos do Brazil. Revist. Soc. de Geogr. do Rio de 

 Janeiro, 1889, V, 129-149; 1890, V, 69-70. Abstract: Neues Jahrbuch fur 

 Mineralogie, 1891, II, 304-305 (Referate.) Extracts: UEtoile du Sud, 

 Rio de Janeiro, 19 Janvier, 1892; Bulletin de Geographic Commercial de 

 Bordeaux, 2me serie XV, 156-157. Bordeaux, 1892. 

 DERBY, O. A.: (Holosidero do Bendigo.) Revista de Engenharia, No. 244, 



XII, 261. Rio de Janeiro, 28 de Outubro, 1890. 

 DERBY, O. A.: Tbe Bendego (Brazil) meteorite. Abstract: Proc. Amer. 



Assoc. Adv. Sci., 1890, XXXIX, 262. Salem, 1891. 

 DERBY, O. A.: Observations on tbe genesis of certain magnetites. Abstract: 



Proc. Amer. Assoc. Adv. Set, 1890, XXXIX, 263. Salem, 1891. 

 DERBY, O. A.: Nephelene-bearing rocks in Brazil. Abstract: Proc. Amer. 



Assoc. Adv. Sci,, 1890, XXXIX, 263. Salem, 1891. 

 DERBY, O. A.: On the separation and study of tbe heavy accessories of rocks. 

 Proceedings of the Rochester Academy of Science, I, 198-206. Rochester, 

 N. Y., 1891. Abstract : The Year-Book of Science for 1892, 267-268. Lon- 

 don, 1892. 

 DERBY, O. A.: (Apatite in the iron ore of Ipanema.) Revista de Engen- 

 haria, No. 271, XIII, 634. Rio de Janeiro, 14 de Dezembro, 1891. From 

 the Diario Official de S. Paulo, de 1891. 

 DERBY, O. A.: On the occurrence of xenotime as an accessory element in 

 rocks. American Journal of Science, XLI, 308-311. New Haven, April, 

 1891. Abstract : The Year-Book of Science for 1891, 262. London, 1892. 

 DERBY, O. A.: On the magnetite ore districts of Jacupiranga and Ipanema, 

 Sao Paulo, Brazil. Am. Jour. Sci,, XLI, 311-321. For erratum v. p. 522. 

 New Haven, April, 1891. Also separate. Abstract: Neues Jahrbuch fur 

 Mineralogie, 1894, I. 90. Abstract: Journal of the Iron and Steel Institute, 

 1891, II, 148. London, 1891. 

 DERBY, O. A.: Is the Sao Francisco do Sul (Santa Catherina) iron a me- 

 teorite? Science, XX, 254-255. New York, Nov. 4, 1892. 

 DERBY, ORVILLE A.: A study in consanguinitv of eruptive rocks. Journal 



of Geology, I, No. 6, 597-605. Chicago, 1893. 

 DERBY, O. A.: Humboldt and Brazil. Science, XXII, 91, 1893. 



