GENERAL AND ECONOMIC GEOLOGY zb'S 



M. A. R. LiSBOA : Les mines de manganese de I'Urucum. Le Messager de Sao 



Paulo, Decembre 9, 1918. 

 R. Jose da C. Mattos : Itinerario do Rio de Janeiro, etc. Two volumes. Rio 



de Janeiro, 1836. 

 H. Meyer: Ueber seine Ej:pedition nach Central-Brasilien. Yerhaudel Gesell- 



schaft fiir Erdkunde zu Berlin, volume XXIV, pages 172-198. Berlin, 1897. 

 H. Meyer: Bericht iiber seine zweite Xingu-Expedition. Verbandel Gesell- 



schaft fiir Erdkunde zu Berlin, volume XXVII, pages 112-133. Berlin, 



1900. 

 EuzEBio Paulo de Oliveira : Relatorio sobre a geologia ... da Expedigao 



Roosevelt-Rondon. Jornal do Commercio. Rio de Janeiro, Novembro 15, 



1914. 

 EuzEBio Paulo de Oliveira : Expedigao Scientifica Roosevelt-Rondon. Annexo 



I, Geologia, 79 paginas. Rio de Janeiro, 1915. 

 G. Reinoehl: Terreno minero cerea de Coxim. Matto Grosso. Buenos Aires 



(d. ?), 45 paginas. 

 H. H. Smith : O planalto de Matto Grosso. Revista de Engenharia 28 de 



Janeiro de 1885, volume VII, paginas 17-18. 

 H. H. Smith : Do Rio de Janeiro a CuyabS.. Rio de Janeiro, 1886. 

 K. VON den Steinen : Erforshung des Xingu : Durcb ■ Zentral Brasilien. Leip- 

 zig, 1886. 

 L. VoN Ammon : Devonische Versteinerungen von Lagoinha in Matto Grosso. 



Zeitscbrift der Gesellscbaft fiir Erdkunde zu Berlin, volume XXVIII, 



pages 352-366. Berlin, 1893. 

 Dr. P. Vogel: Reisen in Matto Grosso, 1887-88. (Zweite ScMugu-Expedition) 



mit Anhang : Devonische Versteinerungen von Lagoinha in Matto Grosso. 



Zeitscbrift der Gesellscbaft fiir Erdkunde zu Berlin, volume XXVIII, 



pages 309-366. Berlin, 1893. 



MINA8 GERAES 



Previous investigations. — The geographic details of the base map of 

 Minas Geraes are taken chiefly from the Mappa do Estado de Minas by 

 Benedicto Jose dos Santos, published in 1910. 



It is somewhat remarkable that though Minas G-eraes is the great min- 

 ing state of Brazil, and though a vast amount has been written abont it, 

 its geology is probably less clearly understood than that of any state in 

 that country. One reason for this is that the attention of the world has 

 been directed to its mining rather than to its geology. 



The establishment by the imperial government of the national '^Escola 

 de Minas" at Onro Preto in 1875 and the opening of that school October 

 12, 1876, was a step of the greatest importance, not only for engineering 

 education in Brazil, but also for the advancement of the science of geology 

 in the state and throughout the whole country. Some of BraziFs ablest 

 statesman and, with but few exceptions, all of her geologists and mining 

 engineers have been educated at this school. It is maintained by the 

 federal government and is now under the ministry of Agriculture, Indus- 



