834 THE JOURNAL OF GEOLOGY. 



There are also in press or in manuscript four volumes, as fol- 

 lows : The final report on coal ; the report on the Lower Coal 

 Measures ; the report on clays, kaolins and bauxites ; the report 

 on zinc. 1 A bulletin upon the palaeontology of the state is being 

 prepared by Dr. H. S. Williams, of Yale University ; it will be 

 published by the United States Geological Survey. 



The following are some of the general economic results of 

 the Survey's work : 



i. The areal and structural geology of the state in so far as 

 the subdivisions are known. (The exact parting between the 

 Carboniferous and Lower Carboniferous along the southern 

 margin of the Carboniferous is not known ; indeed it is not 

 known whether the Lower Carboniferous comes to the surface 

 south of the Arkansas River.) 



2. Reporting upon the reputed gold mines of the state. 



3. Outlining the coal area. 



4. Determining" and pointing out the adaptabilities of the var- 

 ious coals, and the best methods of mining and marketing them. 



5. Showing the extent, value and method of locating manga- 

 nese deposits. 



6. Mapping and calling attention to the character, extent and 

 distribution of the marbles and other limestones. 



7. Discovery of chalk, giving its distribution, and suggesting 

 uses to which it may be put. 



8. Chemical analyses of the mineral waters. 



9. Showing the character of the iron ores. 



10. Discovery of bauxite and giving its distribution. 



11. Pointing out the character, distribution, and availability 

 of the clays of the state. 



12. Determining by tests the character of the granites and 

 giving their distribution. 



1 The survey reports are distributed by the writer to his correspondents at his 

 personal expense and on his own account. Copies can generally be had, however, by 

 geologists and capitalists by addressing the Honorable Secretary of State, Little Rock, 

 Arkansas. It is necessary to state, on making application, that one is a capitalist or a 

 geologist, and interested in the geology of Arkansas, and to prepay all postage or to 

 order the reports sent by express at his own expense. 



