400 THE ILLINOIS GLACIAL LOBE. 



was not ascertained. East from here, in the vicinity of the mouth of Pipe- 

 stone Creek, typical till is found in the east bluff of the river. A well oh 

 this bluff, in sec. 1, T. 6 S., R. 18 W., 138 feet in depth, does not reach 

 rock. It penetrated a Lout 30 feet of gravel, beneath which it was mainly 

 in a blue till. 



At St. Joseph a well at the Park Hotel, 165 feet in depth, enters rock 

 only 4 feet and obtains a water that is slightly brackish. The upper 

 40 feet is mainly in blue till, but the remainder of the drift is largely a fine 

 sand in which there are occasional beds of clay or silt carrying fragments 

 of wood. Wood is especially abundant at about 140 feet. Rock ' was 

 struck at the basket factory in St. Joseph at about the same level as in the 

 hotel well, and a slightly brackish water was obtained. 



An experimental gas boring at Benton Harbor, on low ground scarcely 

 15 feet above lake level, penetrated 135 feet of drift and sand. The upper 

 20 feet was entirely sand. Beneath this is a blue clay or silt, containing 

 few pebbles, which graduates downward into a gray sand, also slightly 

 pebbly, and this sand extends to the rock. 



A well on' the east border of Covert Ridge, in sec. 9, Watervliet Town- 

 ship, reached a depth of 125 feet without entering rock. It was through 

 till with the exception of 5 feet of sand at the bottom. Another well in 

 the same section entered blue till at 4 feet, which continued to the bottom 

 of the well at 52 feet. Here a cemented gravelly crust was penetrated, 

 beneath which water was obtained. 



A boring on Covert Ridge, in sec. 34, Covert Township, at W. F. 

 Conners, reached a depth of 220 feet without entering rock. It was 

 mainly through blue till and no water was obtained; a dug well only 

 6 feet from it found water-bearing gravel at 36 to 38 feet- 

 Two wells just west of the village of Covert, in sec. 15, are 70 feet in 

 depth. They penetrate 15 feet of yellow till, beneath which is a blue till 

 extending to the water-bearing sand at the bottom of the wells. A well in 

 the northeast corner of sec. 22, 80 feet in depth, is in till from top to bottom. 

 A well on the west side of sec. 22, 97 feet in depth, penetrated 3 feet of 

 surface sand, beneath which it was entirely in till to a water-bearing sand 

 at bottom. A well in the north part of sec. 14, 100 feet in depth, passed 

 through thin beds of sand which occur in the till at intervals of 15 or 20 

 feet. A well near the center of sec. 11 has a depth of 85 feet and is in till 



