GENERAL AND ECONOMIC GEOLOGY 283 



nied by a geologic map that embraces nearly all of northeastern Para 

 from Obidos to the mouth of the Amazon. It is on a scale of 1 to 6^000,- 

 000 and shows ten lithologic subdivisions. 



Katzer, 1903. — In his Grundziige der Geologic des unteren Amazonas- 

 gebietes, Dr. F. Katzer gives a geologic map of the State of Para on a 

 scale of 1 to 4,400,000. Many subdivisions of the eruptive rocks are 

 given; of the sedimentary beds he makes eight divisions, including the 

 alluvial deposits. 



Bibliography of the Geology of Para * 



Prince Adalbert of Prussia : Travels of His Royal Highness Prince Adalbert 

 of Prussia in the south of Europe and in Brazil, with a vojage up the 

 Amazon and the Xingu. Translated by Sir Robert H. Schomburgk and 

 John Edward Taylor. Two volumes, 8°. Volume I, 338 pages; volume II, 

 337 pages. London, 1849. (The Brazilian portion begins in volume I, 

 page 211, and extends to the end of volume II.) It contains notes on the 

 character of the rocks. 



Professor and Mrs. Louis Agassiz : A journey in Brazil, xix + 540 pages, 

 illustrated. Boston: Ticknor & Fields, 1868. Chapter XIII, Physical 

 history of the Amazons, pages 397-441, and many geological notes. 



J. C. Branner: The pororoco, or bore, of the Amazon. Science, November, 

 1884, volume IV, pages 488-492, illustrated ; also, separate, with additional 

 notes. Illustrated, 12 pages, 8°. Boston, 1885. 



Georges Brousseau : Les Richesses de la Guyane Frangaise et de Fancien con- 

 teste Franco-Bresilien. Onze ans d'exploration. Illustrated and map. 248 

 pages, VIII. Paris, Societe d'editions scientifiques, 1901. 4me partie, 

 ancien conteste franco, bresilien, page 185 et seq. Constitution geologique 

 generale, page 193 et seq. L'or, etc., pages 217-234. Houille, pages 235-236. 



Charles B. Brown and J. G. Sawkins : Reports on the physical, descriptive, 

 and economic geology of British Guiana. Published by order of the Lords 

 Commissioners of Her Majesty's Treasury. London, 1875. (297 pages, 

 illustrated, and maps.) Geology on the Brazilian frontier. 



W. Chandless : Notes on the rivers Arinos, Juruema, and Tapajos. Journal 

 of the Royal Geographical Society, volume XXXII, pages 268-280. Lon- 

 don, 1862. 



John M. Clarke : As trilobitas do grez de Erere e Maecuru, Estado do Pard, 

 Brazil. Archivos do Museu Nacional do Rio de Janeiro, volume IX, pag- 

 inas 1-58, 2 plates, 2 figures. Portuguese and English. Rio de Janeiro, 

 1896. 



John M. Clarke : A fauna siluriana superior do Rio Trombetas, Estado do 

 Para, Brazil. Archivos Museu Nacional Rio de Janeiro, volume X, pages 

 1-48, 1 figure. (Portuguese and English.) Rio de Janeiro, 1899. 



JOHN M. Clarke : Molluscos devonianos do Estado do ParS, Brazil. Archivos 

 Museu Nacional Rio de Janeiro, volume X, paginas 49-174, 8 plates. 4°. 

 (Portuguese and English.) Rio de Janeiro, 1899. 



* Many of the references to Amazonas contain notes on Pard also. 



