This report is based on two months reconnaissance in the summer of 1941 in the Eden Valley, Wyoming. The work is as yet far from complete and the conclusions presented here must be regarded as tentative. It is hoped that in the future more extensive geological work may be undertaken.

The Finley site provides a promising opportunity for a determination of the age of the Yuma culture. The points and bones described by Dr. Howard occur in a culture layer which has been found in a large dune area, here called the Killpecker dunes. The deposition of the culture layer is one of a series of events in the dune area which can be correlated with the cutting and filling of gravel terraces in the Eden Valley to the west, and these in turn may be related to the glacial chronology in the Wind River Mountains which lie to the north.