38 BRAXXER BIBLIOGRAPHY OF THE GEOLOGY OF BRAZIL 



DERBY, O. A.: Observagoes sobre os calcareos do Rio de Janeiro, Minus, e 



S. Paulo. Re vista de Engenharia, VI, 26-28. Rio de Janeiro, 14 de Fev., 



1884. Auxiliador da Industria Naeional, n. 4, 83-87. Rio de Janeiro, 



Abril. 1884. A part of the same article under the title "Limestone forma- 

 tions" in The Rio News, p. 3. Rio, March 5, 1884. 

 DERBY, O. A.: Calcareos hydraulicos de S. Paulo. Revista de Engenharia, 



VI, 116-117. Rio de Janeiro, 28 de Maio, 1884. 

 DERBY, O. A.: On the flexibility of itacolumite. Amer. Jour. Sci., 3d series, 



XXYIII (CXXYIII), 203-205. New Haven, 1884. 

 DERBY, O. A.: Peculiar modes of occurrence of gold in Brazil. Amer. Jour. 



Sci., XXYIII (CXXYIII). 440-447. New Haven, 1884. Abstract: Zeit- 



schrift fur Krystallographie und Mineralogie. (Grotb.) XI, 295. Leip- 

 zig. 1886. 

 DERBY, O. A.: Analyses of Brazilian minerals. Amer. Jour. Sci., XXYII 



(CXXVII), 73-74.* New Haven. Jan., 1884. Abstract: Neues Jahrouch fiir 



Mineralogie. 1885, II, 257. (Referate.) 

 DERBY, O. A.: The Santa Catharina meteorite. Amer. Jour. Sci.,"KXIX 



(CXXIX), 33-35; 496. Xew Haven, Jan., 1885. 

 DERBY, O. A.: Is Brazil a fertile country? The Rio News, March 5, 1885. 



XII, 3. Rio de Janeiro, 1885. 

 DERBY, O. A.: The physical features of Brazil. Science, V, 273-275. One 



map. Xew York, April 3, 1S85. Taken from The Rio News, XI, 3-4. 



Rio de Janeiro, Dec. 15, 1884. 

 DERBY, O. A.: The drainage system of Brazil. Science. V, 296-299. Xew 



York, April 10, 1885. From The Rio News, XI, 3-4. Rio de Janeiro, Dec. 



24, 1884. 

 DERBY, O. A.: Yote on Brazilian minerals. Amer. Jour. Sci., CXXIX, 70-71. 



Xew Haven, 1885. 

 DERBY, O. A.: (O Carbonifero do Amazonas.) Revista de Engenharia, 14 de 



Jan. de 1885, VII, 10-12. From the Jornal do Commcrcio, Rio de Janeiro, 



1885. 

 DERBY, O. A.: Contribuigao para o estudo da geographia physica do Yalle do 



Rio Grande. Rcvist. Soc. de Geogr. do Rio de Janeiro, I, 291-318. Rio de 



Janeiro, 1885. 

 DERBY, O. A.: Esquisse geologique (du) Bresil. Annuaire geologique uni- 



versel et guide du geoloque, etc. II, 2e partie, 29-35. Paris, 1886. 

 DERBY, O. A.: (?) under signature "Y. A." Letter referring to eruptive 



rocks in the Province of Rio de Janeiro. Science, VIII, 477-478. New 



York, 1886. 

 DERBY, O. A.: Carta sobre a geologia da regiao, dirigida ao Dr. P. de Mello 



Brandao. As aguas mineraes de Araxa, 9-15. Rio de Janeiro, 1886. 

 DERBY, O. A.: Mineral novo do Brazil (Laavenite). Revista de Engenharia, 



Xo. 168, IX, 189. Rio de Janeiro. 28 de Agosto, 1887. From Graeff in 



Neues Jahrbuch fiir Mineralogie, G. u. Pal., 1887, I, 201-203. 



DERBY, O. A.: Observagoes sobre a taboa [dos fosseis cretaceos do Brazil 

 descriptos por C. A. White]. Archivos do Museu Nacional do Rio de 

 Janeiro, Nil, 269-273, 4°. Janeiro, 1887. 



DERBY, O. A.: The genesis of the diamond. Science, IX, 57-58. 1887. 



DERBY, O. A.: On Xepheline rocks in Brazil: Part I, with special reference to 

 the association of Phonolite and Foyaite. Quart. Jour. Geol. Soc, XLIII, 

 457-473, sketch map and figures. London. 1887. Abstract of Part I in 

 Neues Jahrouch fiir Mineralogie, I, 119, 1889. (Referate.) Part II, The 

 Tingua mass. Quart. Jour. Geol. Soc, XLYIL 251-265. London, 1891. 

 Abstract of Part II in Neues Jahrouch fiir Mineralogie, I. 522. (Ref- 

 erate.) 1892. Abstract: The Year-Book of Science for 1891, 267. Lon- 

 don, 1892. The same in Portuguese : Sobre as rochas nephelinas do 

 Brazil, com especial referenda a associagao do phonolyto e foyaito. Re- 



