Smithsonian Report. 1"SI F. H. H. Roberts 



PLATE 3 



1. Excavating in tlie mouth of Blrdshead Cave in the Boysen Reservoir, W\oming. The 

 basin seen in the background will eventualh' be flooded. 



2. Starting excavations at the Terminus Reservoir in California. 1 he locations ol me 

 house pits are shown by the dark circles on the surface of the ground. 



