PEOEIA COUNTY. 245 



No. 8. Clay shale 24 foet. 



No. 9. Nodular limestone 8 



No. 10. Gray shale S8 



N<->. 11. Blue limestone 2 



No. 1-2. Dark shale 12 



No. 13. Bituminous shale 2 



No. 14. Coal, (No 3) 3$ 



This boring was made by the Elmwood Mining and Manufacturing 

 Company, and I am indebted to W. J. Phelps, Esq., of said company, 

 for the details here given. By comparing this section with that of 

 Voris & Co., on the east bank of the Illinois river opposite Peoria, as 

 given in Vol. IV, p. 180, it will be seen that the beds below Xo. 4 coal 

 thicken somewhat to the eastward, as it was found to be about one 

 hundred and thirty-three feet from No. 4 down to Xo. 3 in that boring, 

 while at Elm wood it is only ninety-eight. 



On one of the branches of the north fork of the Kickapoo, on sec. 5, 

 in Jubilee township, coal 6 outcrops in the bed and along the banks of 

 the creek. The coal is very irregular in its development in this vicinity, 

 sometimes thinning out to a mere streak, and then thickening to five or 

 six feet. Xo. 7 was also found here, represented at the outcrop by 

 about a foot in thickness of rotten coal. About twenty feet or more 

 above Xo. 7 we saw a bed of hard, brownish-gray limestone, some three 

 or four feet in thickness, traversed by thin veins of calcite, and resem- 

 bling somewhat the baud of sparry limestone at the top of the King- 

 ston section. 



One mile and a half north-east of Priuceville Xo. 7 is worked on a 

 small branch of Spoon river. The coal varies in thickness here from 

 two and a half to three feet, with a tolerable good roof of bituminous 

 shale. Xo. 6 has also been found on this branch, and a shallow shaft 

 sunk to it ; but it proved so irregular in its development that the work- 

 ing of it has been abandoned, and all the coal mined at the time we 

 visited this locality was obtained from Xo. 7. and it is probably the only 

 coal that outcrops in the northern tier of townships in this county, ex- 

 cept, perhaps, on Spoon river, in the north-western corner of the county, 

 where Xo. 6 probably again appears above the river level. 



Three miles north-east of Princeville a bed of limestone outcrops on 

 the open prairie, and only from three to five feet below the general level 

 of the surface. At Chase's quarries the bed is about twenty feet thick, 

 the lower six feet being a true crinoidal limestone, composed almost en- 

 tirely of the joints of small crinoids. and containing also a few fossil 

 shells, among which we observed Spirifer cameratm, AtJiyris subtiUta. 

 Hemipronites crassa. and some remains of fishes. The middle and upper 

 pDrtiou of the bed is nearly destitute of fossils, and is a thin-bedded, 

 buff-colored, earthy limestone, a portion of which is in thin even layers 



