MISCELLANEOUS PAPERS RELATING TO ANTHROPOLOGY. 547 



ception of one side of one inferior maxillary. This was well preserved, 

 and stained a deep green color. Not nnderstanding the import of this, 

 the laborers missed finding a copper implement of some kind. No other 

 remains were found in the vicinity. 



Plan IL 



Plan III is a singular group of mounds 3 miles from Spring Hill post-of- 

 fice, Whiteside County, Illinois. The bluffs along Rock Eiver are covered 

 with mounds. This group, however, is on the alluvial bottom, about 30 

 rods from the river. Though there maj- be others on the lowlands, yet 

 these are the only ones I found so situated. This group is in a semi- 

 circular form, in quite regular lines, as will be seen by a reference to 

 the plan. They are on a plat of ground a little higher than the sur- 

 rounding level. They are surrounded on three sides by a slough, in 

 earlier times probably communicating with the river, and this may have 

 had some influence in shaping the crescent form of the arrangement. 

 However, being on the ground, the impression cannot be resisted that 

 there was some special design in the grouping. 



While most of the mounds were round and of varying size, some of 

 them were long and narrow. The figures inside the circles indicate the 

 dimensions of the larger ones in paces (2i feet to the pace). Their rel- 



