48 
ON THE GEOLOGY AND NATURAL HISTORY 
Feet. 
100 
4 
1. Long slope of about one hundred feet, no rocks seen, ......... 
2. Dark argillaceous limestone, stained with iron, and containing fragments of Crinoids, . 
8. Soft decomposing argillaceous limestone, ............ 
4. Very hard light yellow compact limestone in one massive bed, containing great numbers of Fusulina, also 
Productus CaUiounianus, &c., ............. 
5. Ash-colored laminated clay, .............. 
6. Hard decomposing argillaceous limestone with Fusulina, ......... 
7. Blue, green, and ash-colored clay, ............. 
8. Gray argillaceous limestone, with more or less ferruginous matter, ....... 
9. Light bluish clay somewhat laminated, ............ 
10. "White decomposing argillaceous limestone with Productus CaUiounianus, ...... 
o 
G 
22 
O 
O 
18 
3 
7 
1 
We heard of a bed of coal some four or five miles above this on the same creek, but 
were unsuccessful in an attempt to find the locality where it crops out. We were informed, 
however, by Mr. Pillsbury, an intelligent gentleman living at Zeandale, that the bed is 
from four to six inches in thickness, and overlaid by about three and a half feet of blue 
shale, strongly impregnated with alum. Above the latter he said there is an eight or ten 
inch layer of dark argillaceous material, weathering to an iron rust color, and containing 
many nodular concretions,—perhaps of carbonate of iron. From the information obtained 
in regard to the location and elevation of this coal bed, we are inclined to believe it must 
hold a position a little below the horizon of the middle of the slope at the top of the fore¬ 
going section. It is probably the highest bed of coal in the whole series of this region,— 
at any rate we saw no indications of coal above it. 
About a mile or a mile and a half north of the locality where this coal bed lias been 
seen, the dividing ridge between the Kansas and Deep creek, rises to an elevation of near 
three hundred and twenty feet above the latter stream at the nearest point. Here at the 
summit of this ridge there are some thin outcrops of gray and whitish argillaceous lime¬ 
stone, showing on weathered surfaces a somewhat laminated structure, and containing at 
places large spines of a species of Archceocidaris ; beneath this there is about two feet of 
gray fragmentary limestone reposing on a more compact bed of hard gray limestone near 
three feet in thickness, and often cellular in the middle. Along the slope, about one 
hundred and twenty feet below the horizon of these beds, we found loose specimens of 
Spirifer camemtus, Orthisina umbraculam ?, Rlnjnchonella Ufa, Adorisma, Synoclctdia 
biserialis , &c. Just below these, there were many loose slabs of light yellowish fine¬ 
grained calcareous sandstone, containing Productus , Pecten, and Fucoidal markings. 
About forty-seven feet lower down the slope, and near one hundred and fifteen feet above 
the level of the Kansas, there is an exposure of light grayish yellow granular limestone, 
showing a thickness of three feet, in which we only saw fragments of a Clionetes , and 
