THE KANSAN ICE INVASION 277 



able to the Illinoian drift. A typical section in Clermont County is shown 

 below: 



Well Section at Mount Oreb, near Bethel 1 * 1 



1. Yellow clay, pebbly 14 feet 



2. Sand and gravel 6 " 



3. Blue till (Illinoian drift) 20 " 



4. Black mucky clay 15 " 



5. Sand 3 " 



6. Alternations of bluish clay and black muck extending to the limestone 10 " 



Height of section , 68 " 



Leveret t doubtfully refers to No. 4 as preglacial, but it would seem to more 

 nearly fill conditions for the Yarmouth interval. Orton, who first published 

 the above section, 133 remarks that all wells dug pass thru this buried soil. It 

 would appear to be of wide extent in this portion of Ohio, and has been speci- 

 fically noted in Hamilton County, 134 where stumps bear the mark of the huge 

 Castoroides, which was associated with the mastodon and the mammoth; near 

 Hyattville, Delaware County, an old soil is found beneath blue till. This 

 section is noted below : 13i 



5. Loose, fresh yellow till 6-8 feet 



4. Blue, hard jointed till (apparently old-Illinoian) 6 " 



3. Stratified sand, much weathered (thickness variable) 2 " 



At Paris/ 36 Champaign County, on summit between Mad River and the 

 Great Miami Valley, a well section reached large pieces of wood (red cedar) 

 and fragments of mussel shells in gravel at 400 feet. This section is believed 

 to be in the ancient channel of the Miami River, and the deposit may represent 

 the Yarmouth interval. Near New Burlington, Clinton County, wood, leaves, 

 . and sticks have been found in blue clay at from 15 to 40 feet below the surface. 137 



In Brush Creek, Adams County, 138 the horns of an extinct ox (Bison lati- 

 frons) were found 18 feet below the surface in a gravel deposit, lying on the 

 Cincinatti group of the Ordovician. Many years ago Whittlesey 1 9 reported 

 the remains of a horse from fissures in clay seams of limestone, near Columbus, 

 Franklin County. This may be referable to the Yarmouth interval or it may 

 be of Sangamon age. Many records from Ohio cannot be satisfactorily placed 



1JI Leverett, Mon. 41, p. 273. 



lu Geol. Ohio, I, p. 443. 



™0p. cit., pp. 429, 432. ' * 



135 Geol. Surv. Ohio, Bull., 14, p. 61. 



IM Orton, Geol. Ohio, VI, p. 277. 



137 Whittlesey, Amer. Journ. Sci., (ii) V, pp. 213-214, 1848. 



119 Smith, Journ. Cin. Soc. N. H, X, pp. 19-24; Amer. Journ. Sci., (iii), X, p. 386, 1875. 



u » Amer. Journ. Sci., (ii), V,p.215, 1848. 



