280 Scientific Intelligence. 



hitherto. There has also been some addition to our knowledge of 

 the fossiliferous iron ore beds. 



"The metamorphic rocks, on the western border of the Cohutta 

 mountains, have been found to contain lead, copper and silver ; 

 while barite has been found at the base in Murray county, and 

 large beds of the same near Stegall's station, in Jiartow county. 

 The relation of the metamorphic rocks in these mountains, as well 

 as that in the Blue Ridge and across the Chattahoochee ridge, 

 along the Tugaloo and Savannah rivers, to the corresponding 

 adjacent parts of Tennessee, North Carolina and South Carolina, 

 have been studied, and a regular succession of Potsdam, Quebec 

 and Cincinnati rocks found, in alternating bands, while the whole 

 of this metamorphic region appears to be of Silurian age. 



"Prof. Bradley reports 'the extension of the gold-belt over large 

 areas not previously recognized as gold-bearing ; the determina- 

 tion of the age, equivalency and position of nearly every impor- 

 tant stratum in the Blue Ridge of Georgia, including the copper 

 ores of Fannin and Gilmer, as well as those of Lumpkin and 

 Towns, and the corundum belts of Union, Towns and Rabun, 

 (with the probable position of the equivalents of these latter in 

 Habei-sham, White, Lumpkin and Dawson,) and the determination 

 of numerous levels which affect both the working of large areas of 

 the gold-field and the location of projected railroads. The points 

 of greatest scientific interest are the identification of the serpen- 

 tines, chrysolites, chlorites and steatites of the corundum belts, 

 with the magnesian limestones of the Quebec group, (the Knox 

 dolomyte of Safford,) and that the underlying schists of the gold- 

 belt with the Knox shale of the lower part of the Quebec' 



" Prof Loughridge has found in the Southern portion of the 

 State, that the Cretaceous rocks extend from Columbus nearly to 

 Ft. Gaines, affording valuable beds of marl, and that the Tertiary 

 rocks continue, from a line drawn from Ft. Gaines via Macon to 

 Augusta, over the whole of the Southern counties, abounding in 

 deposits of marl and limestone, while the more recent formations, 

 of Okefeuokee and smaller swamps, afford an unlimited supply of 

 marsh muck, which is already being utilized to the great advan- 



*^f.We' 



upon the detailed, systematic and ac'urate survey of each county 

 in the several divisions of the State ; and it is proposed, during 

 the next season, to begin this work at three points on the western 

 border of the State— one party beginning with Dade county, 

 another with Haralson, and a third with Muscogee." 



We are glad to see that this State, although the last in the 

 Union, except Florida, to commence the systematic survey of her 

 mineral wealth, is pushing forward the work so well begun last 

 year. It has long been needed, and is evidently in good hands. 

 The results above noticed are of great interest, and we shall 

 look rather impatiently for the detailed reports " now in prepara- 

 tion." This work in Georgia fills the only blank hitherto existmg 



