182 GEOLOGY OF OHIO. 
vented this ridiculous waste of hundreds of dollars, but also would have 
shown accurately, over a considerable extent of country, the horizon at 
which the blackband might be sought. The shale here contains great 
numbers of Aviculopecten rectilateraria, Cox, sp. 
Springs issuing from these shales are, for the most part, more or less 
impregnated with iron, and where they empty into low grounds bog iron 
ore is found in considerable quantity. In the vicinity of Harlem, Lee 
township, the springs at this horizon are strongly chalybeate, and at one 
time they were quite famous. On Mr. Samuel Dunlap’s property is a 
spring which was formerly celebrated as a curative for dysentery and 
allied diseases. Many years ago a hotel was built in the glen near this 
spring, and was largely patronized; but it has gone to ruin, and, strangely 
enough, the spring is by no means so strongly chalybeate as before. Other 
springs of like character occur on the farms of Mrs. Nancy Morehead and 
Messrs. James Gott and John Hostermann. These never fail, and always 
yield a large amount of water. It is quite possible that were there 
ready means of access to Harlem, these springs might again acquire con- 
siderable reputation, and so render the village, which is pleasantly situ- 
ated, a summer resort for invalids. 
Coal No. 7 6, underlying these shales, is somewhat irregular in its habit, 
but seems to thin out north-westwardly, and in the same direction to lie 
nearer the limestone above. On the dividing ridge east from Carrollton 
it is first seen two inches thick, and almost directly under the limestone. 
Followed toward Harlem, Lee township, it is observed becoming four 
_ inches, then one foot, continually increasing in thickness and separating 
itself from the limestone, until at Harlem it is found twenty feet below 
the upper layer of the limestone, and more than two feet thick. About 
half a mile east from that village Mr. Samuel Dunlap has opened it with 
a shaft sixty-four feet deep. The coal, as obtained by him, is a semi- 
cannel, open-burning, easily mined, of low specific gravity, and contain- 
ing no pyrites, except in thin films upon the vertical planes. It is very 
handsome, but rather brittle. The layers of cannel and bituminous coal 
are of about equal thickness, varying but little from one-tenth of an 
inch. Near the top is a layer of cannel nearly four inches thick. The 
roof is shale, and so firm that the rooms are worked fifty feet wide with 
only a single row of props in the middle. The thickness of the coal is 
twenty-six inches, and there are no partings. 
Mr. James Thompson, about half a mile north from Harlem, has opened 
the same bed. It is twenty-six inches thick, with a not very persistent 
clay parting near the middle. There is no layer of cannel on top, as at 
Mr. Dunlap’s opening, nor are the thin layers of cannel so numerous as 
