CEAWFOBD COUNTY. 25 



intervening between Kb. 8 and 15 are seldom found of sufficient thick- 

 ness to be worked to advantage except where it can be done by stripping 

 along their outcrops, and hence they are of but little value as a resource 

 for fuel. In the western portion of the county but little coal has been 

 found, and only in a single mine, hereafter to be mentioned, has there 

 been any attempt to mine for coal in a systematic way. 



The exposure in the bluffs just below Palestine Landing shows the 

 following beds : 



Feet. 



No. 1. Covered slope of loess and drift 15 to 20 



No. 2. Shelly brown limestone, with fossils 2 



No. 3. Bituminous shale and thin coal — No. 12 1 to 2 



No. 4. Sandy shales and sandstone 45 to 50 



No. 5. Bituminous shale, with numerous fossils 2 to 3 



No. 0. Coal— Xo.lt 1 



No. 7. Hard, dark-gray bituminous limestone 2 to 3 



No. 8. Shale 15 to 20 



The shelly brown limestone Kb. 2, of the above section, contains 

 numerous fossils, among which I recognized Spirifer cameratus, Pro- 

 ductus costatus, P. punctatus, P. Prattenianus, P. longispinus, Chonetes 

 Flemingii, joints and plates of Crmoidce, Orthis carbonaria, and some 

 undetermined forms of bryozoa. Farther west in this county, and in 

 Lawrence also, Ko. 12 coal is overlaid by a buff, calcareous shale, in 

 which Orthh carbonaria and Lopliophyllum proliferum are conspicuous. 



The bituminous shale, No. 5, of the above sectiou I found well exposed 

 at the bridge on Lamotte creek, on the road from Palestine to the laud- 

 ing, and the following group of fossils were obtained from it at this 

 locality : Pleurotomaria sphcvrulata, P. tabulata, P. Grayvillensis, Bellero- 

 plion carbonarius, B. per-carinata, etc., corresponding with the beds at 

 Lawrenceville aud Grrayville. Numerous bauds of carbonate of iron 

 occur in the shales at the base of the above section, both on Lamotte 

 creek and in the river bank at Palestine lauding. 



Eobinson is located on a sandstone deposit overlaying all the rocks 

 found in the bluffs at Palestine lauding, indicating a decided dip of the 

 strata to the westward. The outcrops of sandstone on the small branch 

 of Sugar creek, which drains the section on which the town is built, 

 show from 15 to 20 feet in thickness of soft brown rock, in which a few 

 small quarries have been opeued. This portion of the bed affords sandy 

 shales, and thin-bedded, rather soft brown sandstone, with some thicker 

 beds towards the base of the outcrop, which are rather inaccessible, 

 from the amount of stripping required to reach them, as well as from 

 the fact that they are partly below the water level in the branch. 



At Mr. Isaac C. Hole's place, north of Eobinson, on the N". E. qr. 

 of sec. 1G, T. 7, E. 12, more extensive quarries have been opened in 

 this sandstone, and a much greater thickness of strata is exposed. The 

 quarries arc on a branch in the timber, but there is almost a continuous 



