WORK IN THE STATES IN 1901 105 



Holmes studied the Columbia and Lafayette gravels and loams of 

 North Carolina, tracing their equivalents in the Tennessee valley across 

 the states of Georgia, Alabama, and Tennessee. Pratt made local studies 

 of mineral deposits in the crystalline rocks of North Carolina west of the 

 Blue Ridge, and was associated with Lewis in the study of the origin 

 and relations of the corundum-bearing rocks of the western portion of 

 the state. Keith revised earlier areal work in the Great Smoky moun- 

 tains in North Carolina and Tennessee, and was otherwise occupied 

 with areal surveys in Oconee, Pickens, Greenville, and Anderson coun- 

 ties, South Carolina. 



Areal and economic work was continued by the State Survey of Ala- 

 bama. Smith assembled and correlated the records of artesian wells in 

 Alabama and Mississippi and made a local study in connection with 

 borings for oil in Mobile county, Alabama. McCalley mapped a por- 

 tion of the crystalline area in northern Alabama, and a portion of the 

 Cahaba coalfield. Hall prosecuted a systematic investigation of the 

 water powers of the state. 



The gas wells of Louisiana, in Natchitoches, Winn, and Grant counties, 

 were examined by Adams. Harris continued the study of underground 

 waters, and Veatch worked on the geology of the Pliocene formations. 



Ashley studied the Carboniferous strata of northern Kentucky and 

 southern Indiana with special reference to the occurrence of coal. 



In Ohio, Orton studied those resources which are likely to aid in the 

 development of the Portland cement industry. Peppel investigated 

 limestones with reference to their use for the manufacture of lime and 

 lime mortars. Bownocker continued work on the oil and gas districts, 

 and Lord on the fuel values, absolute and comparative, of the Ohio coals. 

 Prosser studied the stratigraphy of Carboniferous, Devonian, and Silu- 

 rian formations in various parts of the State and made a geologic map 

 of the vicinity of Columbus. 



Blatchley and Hopkins studied the partings between certain forma- 

 tions in the southern part of Indiana for the purpose of securing exact 

 data for a geologic map, and Blatchley was further occupied with an 

 investigation of mineral waters. Cummings made collections of Ordo- 

 vician fossils. 



In Michigan, Leverett and Taylor continued work on moraines and 

 other features of the drift. Lane investigated the occurrence of coal in 

 Saginaw county, and made studies also of underground temperatures 

 and of the relations of formations penetrated by deep wells. Grabau 

 continued a study of Devonian limestones. Davis investigated the 

 origin of marls. Russell continued the investigation of the Portland 

 cement industry of the state. Bay ley continued work on structural and 



