has given us a beautiful section right across the shifting river bank and part of the bed. The rude sketch below will give you something of an idea of the conditions. It shows I think that we are excavating on what was the north side of the old river, and that the sandstone here is the sand-bars which accumulated on the inner bend of the river. As the river became more sinuous successive bars were deposited, so that we are at work on the northern bank and bed of the river, and the river here [flowed?] to the southward.



Yours,

Earl Douglass



[Sketch]