670 GEOLOGY OF OHIO. 
On Section 23, Monroe township, the coal is fifby- three ect from the 
surface, and ten feet ten inches thick. 
On Section 15, of same township, north-west quarter, the coal is 
twenty-nine feet from the surface, and eleven feet six inches thick. 
On Section 9, north-east quarter, the stream has exposed the upper 
portion of the coal, and at this point Sands’s bank was opened, and an 
entry driven some thirty or forty yards. 
The following is a section of the strata: 
FT. IN 
Sand-rock. 
Shale cst cccems Sete ketene cic ceptoweis nicneisutemeeerane cicet ee meee Gary 
Cal eats o oeieherceld ve clalMirs ecjociel ade elaine belo ican wicteve bine ke lel ote oye nlereet reer 2 11 
Shaler cana re areectevore alae retdelewte wivisigwie emai deme cicite epee etree eee i 1 
COB) eerie onttaieiateloteicraialorewsianeicialote win is Noiwiniore exe ceioinisisteinin SREIe oe ee elo tetetners 5 
Sale eee SSS oS oj oi SS alti e cine Warelcie lara Sains te Geer ia ee CS Ee a ers 2 
Coalin.ts 22: eeeSSowos ee ie he see seca oo See ie Bayo el So eeeoctere meme 2 10 
Total-thickness, of Coal..c<cce conc ccdissicc eh eaeeacae aoe case cee 11 3 
These sections will suffice to show the general character of the coal, 
and to indicate its continuity over all this field. A marked change will 
be observed in the relative thickness of the different benches. At 
Shawnee and Straitsville, the lower benches furnish the purest coal, and 
are about two feet thick each. Here the lowest bench is often three feet, 
and the middle bench between five and six feet, and neither of them in 
any respect inferior to the corresponding benches at Shawnee or Straits- 
ville. Indeed, a careful study of all the exposure shows that here is the 
maximum development of the coal, both in thickness and in quantity, 
only one improvement being to the north of this, viz., a smaller per- 
centage of water in the coal. 
The coal is here dry, being free from sulphur, susceptible of being 
mined in large blocks, is more laminated, showing thin seams of mineral 
charcoal, which make it more open burning and an excellent furnace 
coal. 
