38 . GEOLOGY OF OHIO. 
lowing figures, viz.: 58’, 73’, 74,’ 75’, 75’, 79’. Its distance below 
the seam next above it ranges thus: 11’, 20’, 27’, 28’, 33’, 38’. 
The leading facts of the section are represented in the accompany- 
ing diagram, Fig. XI. By the side of it, the section which was ob- 
tained north of the Canfield water shed, and which has been already 
described, is shown. ‘These sections are interpreted by the naming of 
their elements, in accordance with the views here presented, but it is 
hard to see what other interpretation of the principal facts is possible, 
for it must be borne in mind that the Canfield cannel seam is common 
to the two sections, having been traced completely through the dividing 
ridge from north to south, as all agree. | 
To complete the statements as to the proper place of the Canfield 
cannel, the elevations of the seam above Lake Hrie are here given for 
three of the points named. The coal is by a close approximation: 
At CanfieldiStationee tcc sncecce ceases testt Seeceerereetenees 595’ above Lake Erie. 
At Cook’s Crossing (43 miles below)............s.sssssseesen apy = i 
At Walters Mine (73 miles below)...................0-ssoees ABI; 8 i 
The dip increases somewhat to the southward, but its general course 
is unbroken. On the theory that the Leetonia coal is the Canfield can- 
nel, it has been found necessary to introduce a reverse dip at Green 
Station, but there is nothing to indicate any such irregularity, and noth- 
ing to suggest it, except the necessity imposed by a wrong identification. 
Some of the borings at Leetonia were undertaken in a search for 
the Block coal, but only one was carried deep enough to reach its 
horizon, and this fell short of the normal measure. There seems but 
little reason to expect the Block coal so far away from the boundary of 
the coal field, but the borings made do not demonstrate its absence from 
this part of the field, the lowest reaching but 105 feet below the Lower 
Mercer horizon. 
The Lower Freeport limestone and coal are found at Leetonia, at a 
height of 75 feet above the Lower Kittanning coal. The interval is 
shorter than it is to the southward, but it agrees with the ordinary 
measurements in the upper valley of the Little Beaver. 
The facts already given afford the true interpretation of the Lee- 
tonia section, but the interpretation now presented does not rest on 
these facts alone. 
