AG66 GEOLOGY OF OHIO. 
No. 5 is a good ore, and worthy of some practical investigation. The 
layer is thick enough to be worked under favorable circumstances, and 
being near the Ohio River, it might be shipped to furnaces down the 
river. The other ores are less rich in iron, and No. 4 has more phos- 
phoric acid than ore should have. 
The probable place of the Hobson coal is below the heavy sandrock at 
the base of the geological section, and not far from the level of the Ohio 
River. It is probably too thin to be of any practical value. 
One-half mile above the mouth of Little Hocking the following section 
was taken: 
Wes | IGA 
BRO SIDULG eeraiae seuel Nata are ats slate Were ore ois sete Monnens tee ete ate tect e etep Mars ale Me reenaan pores asenee cee ens 0) 
POMS AIO STON Giaieen cs oncmealoncnen a eeneatedse temas oR ne PIAA Ae LN Riau S240) (0) 
Smohalevandelanmnatedusand Stomeareseessarecm serene anes eceee ieee rer ee eeamn ta) 
4. Blue shale sterruginous. is 505 ee OG Bs ea ae ue Escalate etree 0) 
5, Coal, FODSOM’ SiSCATI es elec MeSecchccwae eee tee eee eee eC ee ee Oe an aaron gana Me 
62 (Not seen tox,Oh lo Riven. Mee eels een eee eee ee eee On © 
(See Map XI., No. 12.) 
Near the mouth of Little Hocking Mr. M. R. Hill and Mr. Waterman 
have opened the same seam of coal as that givon above, but have taken 
out but little. The seam is quite too thin to make the mining profit- 
able. 
There is another thin seam of coal higher in the hills, of which we 
sometimes find traces, but it is of no practical worth. We sometimes 
find in the Ohio River hills clay shales which contain considerable lime- 
stone of valuable fertilizing quality. The limestone is in small concre- 
tions, and is often sufficiently abundant to give the shale a whitish ap- 
pearance. 
The Drift terraces along the Ohio constitute an interesting feature in 
‘the surface geology of this township; they are high and well defined, and 
upon them are some fine earth-works of the old Mound-builders. 
Although Blennerhasset’s Island belongs to West Virginia, yet, being 
‘very near the Ohio shore, it may be properly alluded to. This island is 
-one of the most beautiful of the river islands, and is connected with 
“scenes in the early history of the General Government which make it of 
no little historical interest. Mr. Wirt’s speech at the trial of Mr. Blen- 
- nerhasset’ for complicity with the designs of Aaron Burr, which were 
supposed to be treasonable, has become classic, and the island he so well 
pictures is often visited by strangers. 
BARLOW TOWNSHIP. | 
This township is north of Durham and west of Warren. The southern 
part is drained by the branches of Little Hocking, and the north part by 
‘the branches of Wolf Creek. In the central and northern part the land 
