﻿NO. lO 



SMITHSONIAN EXPLORATIONS, I923 



15 



Fig. 20. — General view of the skeletons of Diplodocus collected by the 

 National Museum. Men are working on specimen No. 355 at the right, and 

 No. 340 is shown near the floor of the quarry to the left. The large plas- 

 tered blocks on the ledge are portions of the neck of No. 340. (Photograph 

 by Arthur Coggeshall.) 



Fig. 21. — Photograph showing a more detailed view of specini^en No. 353 

 as it was uncovered by Carnegie Museum collectors. The squares, 4 feet 

 across, are painted on the rock to assist in properly mapping the bones. 

 (Photograph by Arthur Cogg-eshall.) 



