GEOLOGY IN NATIONAL MUSEUM MERRILL. 



263 



north wall; (2) a biologic series, along the south wall in separate 

 cases, each of which is devoted to some special class of animals ; and 

 (3) a line of large exhibits, through the center of the hall, illustrat- 

 ing the various phenomena connected with the formation of strati- 

 fied rocks and their contained fossils. 



Each of these three series is arranged primarily for a general 



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public which may have little interest in scientific names and tech- 

 nical descriptions. Therefore the usual labels giving only the scien- 

 tific name and locality of various forms on exhibition are here re- 

 placed by brief descriptions of the specimens in plain English. For 



