18 FOSSIL MASTODON AND MAMMOTH REMAINS. 



Rock Island. In the excavations which were made on the 

 slope of the bluffs between Nineteenth and Twentieth streets in 

 Rock Island in 1897, Dr. J. A. Udden found a carpal bone of an 

 elephant. It was cuboid in form and measured some three or 

 four inches in diameter. It was found on the surface of the ground 

 in an excavation which was near the contact of the loess and the 

 boulder clay. 



Rural township. A well preserved tooth of a mastodon was 

 found in 1900 in a creek in the west half of section nineteen, town- 

 ship sixteen north, range one west (Rural township). The find 

 was made by Mr. A. Dhuyvetter, after a heavy rain which caused 

 high water in the creek. There are reports of other large bones 

 having been found in the same creek. The drift in this township 

 in places rests on pre-glacial gravels, consisting largely of chert. 

 The tooth was secured for the collection at Augustana College. 



(The above four instances were reported by Dr. J. A. Udden.) 



SANGAMON COUNTY. 



Illiopolis a.nd Niantic. In 1870, between Illiopolis and Nian- 

 tic, near the east line of the county, the jaws of a mastodon, with 

 teeth intact, both tusks, and several of the large bones were found 

 beneath a black mucky surface soil, four feet in depth. These 

 bones, together with some buffalo, elk, and deer, were imbedded in 

 quicksand, which probably once formed the bottom of a pool of 

 w r ater to which these animals had resorted. The fossils now be- 

 long to the State Cabinet. 



(Illinois Geological Survey, Vol. V11I, p. 23.) 



The Niantic mastodon was found on the farm of W. F. Corell, 

 in a wet, spongy piece of ground located in a swale or depression 

 of the surface that had evidently once been a pond and had been 

 filled up by the wash from the surrounding highland until it formed 

 a morass or quagmire in dry weather. The bones were about four 

 feet below the surface and partly imbedded in light gray quick- 



