SMITHSONIAN MISCELLANEOUS COLLECTIONS 



VOL. 93. NO. 10, PL. 23 









■^^^%J#^' 



Stratified Site on the Summit of Signal Butte, scotts Bluff 



County 



1. Signal Butte from east. 



2. Cross-section showing three levels. 



3. Level I on south edge. 



(For explanation, see p, 314.) 



