MISSISSINAWA MORAINE. 503 



wells thin beds of sand and gravel are interstratified witli thick beds f)f till. 

 Tubular wells in Hartford and vicinity, made for the purpose of obtaining 

 water, have, in several instances, })assed through a heavy bed of till and 

 then 10 to 20 feet of sand and gravel just above the rock, but in some wells 

 the till rests upon the rock. At Van Buren records of two gas wells were 

 obtained, in one of which the drift is 92 feet, while in the other it is 170 feet. 

 The difference in altitudes of the well mouths is scarcely 25 feet. In a well 

 2 miles east of Van Buren the drift is 150 feet. At Lafontaine, just west 

 of the moraine and 50 to 60 feet lower than its crest, a gas boring shows 

 300 feet of drift. It is probable that a preglacial valley was here entered, 

 for the rock stands at a much higher level in all the neighboring wells. 



Three wells on the moraine about 5 miles south of Lagro have struck 

 rock at about 100 feet. Along the Wabash River near Lagro the rock 

 rises not less than 70 feet above the river bed. North of the Wabash the 

 drift is thicker than it is south, since the level of the underlying limestone 

 becomes lower toward the north. At North Manchester, at an altitude 

 scarcely 40 feet above Eel River, the gas boring penetrated 274 feet of 

 drift. The drift here is almost entirely sand. Nearly all the wells in North 

 Manchester are on a gravel plain and obtain water at 30 to 35 feet, but on 

 the low ground along Eel River, in the eastern part of the city, are several 

 flowing wells 60 to 70 feet deep which are mainly through till. It is 

 evident from these wells that the general thickness of the valley gravel at 

 North Manchester is but little greater than the height of the plain above 

 the river. There may have been thin beds of till in the gas borings which 

 were not noted ; similarly, in borings where the drift is reported to be almost 

 entirely till, thin beds of sand or gravel may frequently have been passed 

 through, but on account of their thinness have occasioned no remark. 



At Columbia City a' gas boring was made near Eel River, on ground about 

 'ZO feet lower than the Pittsburg, Fort Wayne and Chicago Railway, which 

 penetrated 224 feet of drift, the greater part being sand and gravel. 



Four miles east of North Manchester, south of Eel River and on the 

 moraine, a boring for water penetrated till 156 feet without striking a 

 water-bearing bed. Several deep borings between Eel River and Lagro 

 are reported to have been almost entirely through till. An exception was 

 found in a well in sec. 16, T. 28, R. 8 E., where, after the yellow till had 

 been passed through, a bed of sand was entered which continued to the 

 bottom of the well, the depth of which was 90 feet. 



