244 ■ GEOLOGY OF OHIO. 



timately connected with the flint above Coal No. 3. Between these, and 

 about twenty-five feet below Coal No. 2, is a thick bed which may prove 

 to be of some vahie, if one can judge from road-side exposures. It has 

 never been tested, and no satisfactory specimens could be obtained for 

 analysis. 



The upper bed is worked to some extent near Frazeysburg, on prop- 

 erty belonging to' Mr. Abram Adams, and on that of Mr. E. Lemmert, as 

 well as at several other localities nearer the village. It lies near the sur- 

 face, and is obtained by stripping from three to twelve feet of superficial 

 deposits. It varies in thickness from eighteen inches to three feet, but 

 is much injured by its association ftith the flint, which, though usu- 

 ally very thin, sometimes replaces tR ore entirely. This ore occurs in 

 plates and is obtained with considerable ease, each digger averaging 

 about two tons a day. It frequently contains well-preserved casts of Pro- 

 diictvs and Spirifer. 



Specimens of this ore yield the following on analysis. No. 1 is froria 

 Mr. Abram Adams and No. 2 from Mr. Lemmert, the latter converted into 

 limonite by exposure : 



No. 1. No. 2. 



Specific gravity 3.1ij'2 3.464 



Water comMned 2.40 10.05 



SUicicacid 26.72 3.66 



Iron, sesquioxide 13.57 79.07 



Iron, carbonate 43.08 



Manganese 0.60 1.70 



Alumina 2.00 2.60 



Lime, phosphate 2.64 1.13 



Lime, carbonate 4.18 



Magnesia, carbonate .' 4.24 0.65 



Magnesia, phosphate 0.70 



Sulphur : 0.53 0.23 



99.96 91.79 



Metallic iron 30.28 54.65 



Phosphoric acid 1.21 0.89 



This bed is not persistent to the north-east of Frazeysburg. On the 

 West Carlisle road the flint is found of a beautiful bluish-black color, 

 and containing many fossils. Upon it rests a thin seam of iron ore, 

 capped by a grayish limestone. Three miles from Frazeysburg both 

 flint and ore have disappeared and the limestone has become double, 

 with three feet of coarse sandstone between the layers. 



The lower ore bed was worked thirty-five years ago on Mr. Jackson 

 Blizzard's property, but the workings have fallen in, and so concealed all 

 exposures. The revival of mining has called attention to this bed, and 



