52 MINERAL RESOURCES OF ALABAMA. 



price that would insure the success of a plant. This in time will 

 correct itself, but meanwhile the beds of lignite, which are num- 

 erous and of sufficient thickness at many points contiguous to 

 the limestone outcrops and to the navigable streams, are well 

 worth careful testing as to their suitability for use in this manu- 

 facture. It seems probable that gas might be made from them 

 which would replace the high grade coals, and thus start up a 

 new industry in this section of the state. 



Those interested in this subject are referred to a special Bul- 

 letin on the Cement Resources of Alabama, published by the 

 Geological Survey, and to a chapter on the same subject pub- 

 lished by the United States Geological Survey, in Bulletin No. 

 225. 



NOTE. In the preparation of this account of the Cement Re- 

 sources, the writer has had many valuable notes and suggestions 

 from Mr. Edwin C. Eckel, of the United States Geological Sur-r 

 vev. 



