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Annals of the Carnegie Museum. 



for several years for Professor Marsh under the very careful and skillful 

 supervision of Mr. M. P. Felch, who showed a marked degree of ap- 

 preciation of the importance of the remains and met and overcame 

 the many difficulties attending their disentombment in a most com- 

 mendable manner. Shortly after Professor Marsh began his operations 

 at this locality Professor Cope also became interested and sent collec- 

 tors to the same field to make further investigations. Cope's collectors 

 were successful in finding rich deposits of Dinosaur remains in the 

 same locality, but at considerably higher horizons, and these were 

 successfully worked by Professor Cope for a number of years. In 1884 

 all work at this locality was abandoned and nothing further was done 

 here in the way of collecting dinosaurs for sixteen years. In the 

 spring of 1900 the present writer visited the locality and inspected the 



I'u;. I. Nmlli end of Alaisli quarry, 'ihe man in ihc lurc^rcnnicl is standing on 

 the bed of the quarry just below the bone-bearing horizon. The man above is stand- 

 ing on the layer of sandstone above the one containing the dinosaurian remains. 



