be saved. A few unio shells and water-worn pebbles had been deposited in different parts of the mound.
In mound No. 2 the skeleton of a youth, much decomposed, was all that rewarded our labor.
In mound No. 3 no human remains or objects of interest occurred.
The second group of mounds surveyed are situated on the bluff at Bureau, Bureau County, Illinois. The measurements are given in the accompanying table:
MOUNDS IN SPOON RIVER VALLEY.
By W. H. Adams, of Peoria, III.
On what is usually termed a bog-back, on the north side of the Spoon River, 75 yards distant, 80 rods west of the east line and 20 rods south of the north line of section 12, township 11 north, range 43 east of the fourth principal meridian, is a round mound about 30 feet in diameter. On the highest point of the hog-back, at the surface, is some evidence of fire. The evidence of a former fire increases very rapidly. At a depth of from 12 to 16 inches five skeletons were found, of which nearly all the bones were calcined, and many of them entirely consumed by the fire. One of the skulls lay to the north, one to the northwest, one to the south-
