170 GEOLOGY OF OHIO. 



benches; the upper part an open-burning coal, resembling the Briar 

 Hill. On the north side of the valley it is said to be seven feet in thick- 

 ness, but has not been opened to such an extent as to fairly test its qual- 

 ity. The coal mined by J. B. Hawkins, east of the residence of Hon. 

 Arvine ^Yales, in the suburbs of Massillon, is Coal No. 3. It is here 

 twenty-six inches in thickness, is overlain by gray shale twenty feet 

 thick, above which lies the Zoar limestone. The coal is here one hun- 

 dred and twenty feet, by barometer, above the Brooks coal (No. 1) at 

 Bridgeport ; but as the dip is easterly, the interval is doubtless consider- 

 ably greater. The separation of the coal and limestone at the Hawkins 

 Mine, though unusual, is not without precedent. 



By far the best exposure of Coal No. 3 in the county is at Fisher's bank, 

 near Sugar Creek Station. The section at that locality is as follows : 



FT. 



1. Sandstone and sliale 20 



2. Coai blossom (No. 6). 



3. Gray shale 30 



4. Coal No. 5 (outcrop). 



.5. Fire-clay 5 (?) 



6. Gray shale 45 



7. Gray limestone 3-4 



8. Coal No. 4 4-5 



9. Fire-clay 4 



10. Shale and sandstone 50 



11. Coal No. 3 3 



12. Fire-clay 3 



In this section no limestone is seen above No. 3, and it may be want- 

 ing here, but it is most probably separated from the coal, as at the Haw- 

 kins Mine, and its outcrop concealed. 



I give below two analyses of Coal No. 4, which will illustrate its vari- 

 ability of composition. No. 1 is from the Trumbull Company's shaft, 



Magnolia, No. 2 from Browning's mill : 



No. 1. No. 2. 



Specific gravity 1.322 1.342 



Water 7,00 2.40 



Ash 2.70 9.80 



Volatile combustible 30.80 3lJ?0 



Fixed carbon 59.50 56.00 



Total 100.00 100.00 



Sulphur 0.C5 2.00 



Fixed Has, cubic feet 3.50 3.08 



Coal No. 5. 

 This coal lies usually about fifty feet above the gray limestone over 

 Coal No. 4. As a general rule, in Stark county it is two and a half to 



