10 BXTLLETTX 109, UNITED STATES N'ATIONAL MUSEUM. 



The preliniinarv report of Dr. William B. Phillips, who undertook 

 the examination of the gold region, was issued in 1892 as Bulletin 

 Xo. 3 and was concerned with the lower part of the gold belt. The 

 upper part was undertaken by Mr. William M. Brewer, and his re- 

 port thereon was published as Bulletin No. 5 in 1896. This report 

 includes also notes on the microscoj^ical characters of the crystalline 

 rocks of tliis section by Dr. J. Morgan Clements and Alfred H. 

 Brooks. 



The State survey entered upon a plan of cooperation with the 

 United States Geological Survey shortly after the consolidation of the 

 various United States surveys into one organization under the direc- 

 tion of Clarence King. The results of this cooperation were mani- 

 fested in Bulletin Xo. 4 of the State survey, published in 1892, and 

 entitled A Eej^ort on the Geology of Northeastern Alabama and Ad- 

 jacent Parts of Georgia, by C. W. Hayes; and Bulletin No. 43 of the 

 United States Survey, published in 1887. This last-named bulletin 

 treats of the Cretaceous and Tertiary formations of Alabama along the 

 Tuscaloosa, Tombigbee, and Alabama Bivers, under the joint author- 

 ship of Director Smith and L. C. Johnson. The investigation of 

 the Alabama Coastal Plain was continued by the Alabama survey 

 and extended so as to embrace all the territory out to the Chatta- 

 hoochee Iviver, and the results were published in 1894 by the Alabanut 

 survey under the title, The Geology of the Coastal Plain of Ala- 

 bama. In this investigation Dr. Daniel W. Langdon was associated 

 with Director Smith, havijig immediate charge of the territory east 

 of the Alabama RiA-er. It was Avhile engaged in this work that Mr. 

 Langdon made the discovery of the series of Post-Vicksburg Marine 

 Tertiary formations, to which he gave the name " Chattahoochee." 

 The credit of this discovery has been greatly diminished by the intro- 

 duction of a number of ncAv formation names and the restriction of 

 \ ha name Chrittalioocliee to the lowermost only of the formations which 

 Mr. Langdon first brought to the attention of the geologists. 



In the same year (1894) was published a geological map of the 

 State on the scale of 1 incii to 10 miles. This map was accompanied 

 by an explanatory chart of the same size as the map, on which were 

 given, in columns, details concerning the several formations, as fol- 

 lows: 1, Names, Synonyms, Classifications, and Common Fossils; 2. 

 Thickness, Lithological and Topographical Characters, Area and Dis- 

 tribution; 3, Useful Products; 4, Soils, Characteristic Timber Growth, 

 and Agricultin-al Features; 5, Geological Reports containing most 

 important details. 



About this time Dr. "William B. Phillips undertook the study of 

 tlie conditions surroundini>- the manufacture of iron in the State. 



