14 PROCEEDINGS OF THE ACADEMY OP 



here. Only about three miles further west, we saw the following exposure on 

 Vermilion creek : 



Feet. 



1. Slope of about fifteen feet, with near the base some ledges of gray lime- 

 stone, amongst loose fragments of which we picked up specimens of" Spiri- 

 gera subtilita, Spirifer hemiplicata, Productus Norwoodi, and P. splendens? ... 15 



2. Slope, no rock seen 26 



3. Soft bluish and gray more or less laminated clays with irregular 

 sandy seams and concretions 12 



4. Irregular hard blue calcareous seam one to six inches & 



5. Blue clay 2 



6. Soft decomposing more or less laminated sandstone 4 



7. Blue clay one foot above the creek 1 



Almost directly opposite these localities, on the south side of the Kansas, 



some three or four miles back from the river, and nearly on a line between the 

 locality where we saw the exposures on " Last Creek " and Buffalo mound, 

 but considerably below the level of the summit of the latter, we examined 

 some exposures presenting beneath a slope of about eighty feet, in descend- 

 ing order : 



Feet. 



1. Hard bluish gray limestone of which there was exposed 1 



2. Rough yellowish magnesian limestone with cavities lined with chal- 

 cedony 3 



3. Bluish and ash colored clays 5 



4. Layer much like No. 2 1 



5. Yellowish green clay 20 



6. Bluish gray limestone in two layers, the upper of which contains 

 columns of Crinoids, Productus Calhounianus, &c, while Myalina subquad- 

 rata, Orthisina Missouricnsis, Allorisma, Pinna, Monotis, &c, occur in the 

 lower 3 



7. Bluish and ash colored clays exposing a thickness of 5 



The bed No. 6 of this section is evidently the same as No. 2 of the section at 



Buffalo mound (page 12), though here the dip of the strata has brought it 

 lower. Its elevation above the Kansas at Buffalo mound must be about two 

 hundred and fifty feet. "We had no means of estimating very accurately its 

 elevation where the last section was taken, though we do not think it as much 

 as one hundred and seventy-five feet above tbe Kansas. 



Ten miles farther west, on the same side of the river, along a small, stream 

 marked " Deep creek " on the maps, at a point some four or five miles back 

 from the Kansas, and elevated perhaps as much as forty feet above it, some 

 outcrops were examined near Zeandale, presenting the following section, de- 

 scending : 



Feet. 



1. Long slope of about one hundred feet, no rocks seen 100 



2. Dark argillaceous limestone, stained with iron, and containing frag- 

 ments of Crinoids 4 



3. Soft decomposing argillaceous limestone 2 



4. Very hard light yellow compact limestone in one massive bed, con- 

 taining great numbers of Fusulina, also Productus Calhounianus, &c 6 



5. Ash-colored laminated clay 22 



6. Hard decomposing argillaceous limestone with Fusulina 3 



7. Blue, green, and ash-colored clay 18 



8. Gray argillaceous limestone, with more or less ferruginous matter... 3 



9. Light bluish clay somewhat laminated..... 7 



10. White decomposing argillaceous limestone with Productus Calhoun- 

 ianus 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 



[Jan. 



