SMITHSONIAN MISCELLANEOUS COLLECTIONS 



\OL. 68 



station at I'^ield, and are now in Washington. Some of the uncle- 

 scribed forms are here illustrated by figures 5 to 8. and the operations 

 of the quarry are shown by figures 2 to 4. Figure 2 shows the quarry 

 just as the party left it in 1913. and figure 3 shows the l)ack wall 

 tmder which it was necessary to go to obtain fine pieces of the fossil- 

 bearing" rock. When the large slabs of hard shale are finally blasted 

 loose tliev must Ijc carefully s])lit with chisel and hammer (fig. 4) 



-*«« 



Fig. 9. — Mrs. Walcott giving Granny, the mountain squirrel, her noon- 

 day lunch at the Burgess Pass fossil quarry. Photograph by Walcott, 

 1917. 



to expose any fossil remains embedded between the lamiucX of the 

 compact, siliceous shale. The remarkable thing about the shale is 

 that it preserves animals that were as soft and non-resistant as jelly- 

 fish, worms, and the internal parts of worms and crablike animals. 

 One of these is shown by figure 8. It is a swimming and crawling 

 crab, seven inches long. It had two large eyes in front (shown by 



