

1 28 LIFE OF THE PLEISTOCENE 



Pisidium tenuissimum calcareum, abundant 

 " variabile, rare 

 " vesicular^, not common 

 Valvala iricarinata, not common 



" sincera, common 

 Physa gyrina, abundant 



" sayii, rare 

 Planorbis trivolvis, abundant 



" parvus urbanensis, not common 

 " altissimiis, not common 

 Galba reflexa, abundant 

 " caperata, abundant 

 " obrussa decampi, common 



2. Terrestrial Deposits 



W Many years ago, 27 portions of a mastodon were found in a boggy swale near 

 a salt lick, while grading a branch of the C. B. and Q. Railroad at Aurora, 

 Kane County. The tusk was eight feet in length. Bannister 28 republishes 

 this record and adds one for Castoroides ohioensis, which was found in a slough 

 near Naperville, DuPage County. Lathrop, 29 long ago, reported a mastodon 

 tooth from the Kishwaukee River, which had been drawn up in a seine. It is 

 impossible to say from just what formation it may have originated. 



A mastodon was found at Turner's stoppings, 30 about three miles east of 

 Morris, Grundy County, under 18 inches of black mucky soil, and about four 

 feet of yellowish loam, and resting on about a foot of hard blue clay which 

 covered the coal. The location is in a portion of the old river bottom and the 

 body may have been mired here or possibly it was deposited by the river. A 

 skeleton of Castoroides ohioensis 31 was found in a ploughed field many years 

 ago near Charleston, Coles County. 



In addition to the above, Miss Anderson records a number of proboscidian 

 remains from post- Wisconsin deposits, as indicated below: 32 



Cook County. Evanston, in gravel pit (mammoth) ; Glencoe, in glacial drift (mastodon) 



DuPage County. Wheaton, in ditch on farm (mammoth) 



Edgar county. Bottoms of prairie slough, associated with fresh water shells, in light brown 

 marly clay (mastodon) ; fragments of this animal are not rare in Edgar County. 



Grundy County. In bog spring, 7 feet below the surface, associated with bones of bison, deer, 

 and elk (mastodon in abundance). Elephant bones also found in wells in the neighbor- 

 hood. 



Kane County. In marsh, 5 feet below the surface, associated with bison and other bones 

 imastodon). 



27 Evans, Proc. A. A. A. ScL, V, p. 58. 



28 Geol. 111., IV, p. 113. 



29 Amer. Journ. Sci., (ii), XII, p. 438. 



30 Bradley, Geol. 111., IV, p. 193. 



31 Leidy, Proc. Phil. Acad., 1867, p. 97. 



32 Augustana Library Publications, No. 5. 



