POWELL MORAINE. 527 



moraine, is made up largely of a clay which becomes exceedingly hard when 

 dry, owing ]3robably to the small proportion of sand in it. The residents 

 speak of the moraine as a " clay ridge." The bordering tracts present 

 considerable flat surface with a rich, black soil, and accordingly are not 

 classed by the residents with the clay beds, though they are usually under- 

 lain by till. 



Many wells on this moraine obtain a bitter water, rendered so perhaps 

 by the presence of magnesium sulphate, as was determined b)^ analysis of 

 water of similar taste at Portland, Ind., presented on page 502. The bitter 

 water is most common west of the Scioto. 



At Marysville a well at Robinson & Curry's j)laning mill struck rock at 

 100 feet, the drift section being mainly till. In the same village a gas-well 

 boring near Mill Creek, on ground 20 to 25 feet lower than the station and 

 17 feet lower than the court-house grounds, passed tlu-ough 50 feet of drift, 

 as follows: 



Drift j>enetrated in gas horing at Marysville, Ohio. 



Feet. 



Creek wash and yellow clay 18 



Sand and gravel 14 



Blue till 18 



This well has a strong flow of water from 145 feet below the surface, 

 wliich will rise about 3 feet above the surface. At the town well in West 

 Mansfield rock is struck at 100 feet. The section is mainly till. At New 

 California the town well struck rock at 60 feet. It is characterized by 

 bitter water. A well at N. W. Cochran's, one-half mile north of the village, 

 also struck rock at that depth. Both well sections are mainly till. 

 Winchell reported a well at this village, at S. B. Woodburn's, 64 feet deep, 

 which does not reach rock and, like the town well, has bitter water.^ He 

 also presented^ a list of 39 wells in Union Count}^ whose depths range 

 from 11 feet up to 63 feet, none of which enter the rock. Of these, 4, 

 situated on the moraine, are described as furnishing "bitter water;" 3 are 

 chalybeate, 2 are sulphurous, and the remainder are mainly designated 

 "good water." The deejDest wells in this list are on the moraine; one at 

 Mr. Smith's, at Pottersburg, being 60 feet, another, 2 miles east of that 

 village, ownei''s name not given, 63 feet. At Newton, near the inner border 

 of the moraine, the town well is 62 feet deep and has bitter water. 



'Geology of Ohio, Vol. II, p. 333. ^Op. cit., pp. 332, 333. 



