THOMAS.] WORKS ON linn's PLACE. 155 



consist of numerous pits wliicli have been dng at some distant day 

 along tlie sides and on the tops of narrow ridges in quai-rying the flint 

 or cliert found here. They are now partially filled up and covered by 

 the forest growth no way differing fi'om that about them. Scattered 

 all over the ground in the vicinity of these pits are immense numbers 

 of flint or chert nodules, nearly all of wliich are broken; two only were 

 discovered that were unbrolien. Several large flint implements were 

 also found. 



There are several places in this neighborhood where the iiint taken 

 from these pits was manufactured iuto implements, as large bt>ds of 

 flint chips of the same stone occur in which are many unfinished tools 

 some of them showing good workmanshiji. 



In the same neighborhood as the preceding, on Sec. 30, T. 13 S., R. 1 

 W., a number of stone graves were found and explored, but presented 

 nothing different from those already described. However, a discovery 

 was made here which deserves notice. 



In the immediate vicinity, in fact but a few feet from some of the 

 gi'aves, a stone pavement was discovered about a foot below the sur- 

 face of the ground. When fully exposed by removal of the earth this 

 proved to be level, nearly circiiLir, and about 9 feet in diameter. It 

 was composed of flat pieces of limestone so neatly and closely fitted 

 together that it was difticult to find a place where the steel prod could 

 be thrust down between them. These showed the eflect of fire, some 

 of them crumbling into lime when disturbed; mingled with and scat- 

 tered through the earth which covered them were ashes, charcoal, and 

 charred fragments of human bones. In this earth was also discovered 

 a small clay pot. The graves and pavement are not in or near a mound, 

 but on the highest point of Ji hill and in a cultivated field. 



A number of rude stone implements were found on the surface of the 

 ground. There is also one point on the farm where these discoveries 

 were made, where the surface is covered with flint chips to such an 

 extent that it is difticult to plow it. As the flint diggings are near by, 

 it is probable that stone implements were manufactured here, many 

 unfinished and imperfect specimens being scattered over the ground. 



UNION COUNTY. 

 ANCIENT WORKS ON I.INN'S PLACE. 



The first published notice of these interesting works was given by 

 Mr. T. M. Perrine, of Anna, Illinois, in the Smithsonian Iteport for 

 1872.1 



They are situated in the southwest part of Union county (Sec. 30, 

 T. 13 S., R. 2 W.), on the bottom land of the Mississiiipi, a mile or more 

 from this river. The immediate spot upon which they are located is a 

 portion of the upper level of the bottom land, which is here some 10 or 

 12 feet above the swamp land which surrounds it on the west and 



1 Pp. 418-420. 



