58 DAVENPORT ACADEMY OF NATURAL SCIENCES. 



Allamakee County — Continued. 



No. I in the east line, contained an oblong pile of sandstone near 

 the centre; beneath it was a rude stone coffin, of slabs, 6 feet 

 long and i8 inches wide. This contained a skeleton, extended 

 with head to the west, badly decayed; also stone chips, rude 

 scrapers, a valve of unio, and potsherds. On the sand butte near 

 by, which is about loo feet in height, are three mounds Uke the 

 rest in structure. Three mounds within the smaller, squarish 

 enclosure to the south-west of the great circle were opened. 



Elsewhere, Thomas ^^^ describes the square earthwork on the 

 south-west corner of the plateau, on the margin of the bluff, 

 facing west. The wall, which is from 12 to 15 feet wide and 

 from 2 to 4 feet high, surrounded three sides of a square, and 

 measures on the north, 200 feet; on the east (where it is ditched 

 on the outer side), 150 feet; on the south, 175 feet. About 

 thirty feet east of the north-west corner is an excavation about 

 3 feet deep. There are three small mounds within the enclosure. 



No. I was 30 feet long by 20 feet wide, and 4 feet high. The 

 top layer, i foot thick, was of loose sand; the remainder was of 

 hard, yellowish clay. In this were several large, flat sandstone 

 fragments, beneath which, at original surface, was a much-decayed 

 human skeleton, with a few stone chips, unios, and potsherds. 



No. 2 was a cairn of sandstones covering human bones, char- 

 coal, and ashes. It was 18 feet in diameter and 3 feet high. 



No. 3 was a cairn covered with earth and heaped over a mass 

 of charred bones, charcoal, ashes, and i)Otsherds. It was 15 feet 

 in diameter and 3 feet high. 



South of this group, just across an impassable slough, on a 

 terrace at the foot of a bluff, is an oblong enclosure. Along the 

 margin of the slough runs a wall 300 feet long; from its ends two 

 walls run south, nearly at right angles to it; the western one is 

 160 feet long, the eastern is 175 feet long. The height of the 

 walls varies from i to 3 feet, and the width from 10 to 15 feet. 



Outside of each end wall is a washout. A walled vault in 



the side of the eastern bluff near here is described, and referred 

 to some white or half-breed trapper. 



Thomas '74 mentions mounds located on the Hays farm, just 

 above the junction of the Upper Iowa and Mississippi Rivers, 

 two miles south-east of New Albin. Besides small mounds, there 



