338 BIOLOGY AND ITS MAKERS 



the subject should be followed here in detail. The collec 

 tions of material upon which palaeontologists are working 

 have been enormously increased, and there is perhaps no 

 place where activity has been greater than in the United 

 States. The rocks of the Western States and Territories 



Fig. ioo. — E. D. Cope, 1840-1897. 



embrace a very rich collection of fossil forms, and, through 

 the generosity of several wealthy men, exploring parties have 

 been provided for and immense collections have been brought 

 back to be preserved in the museums, especially of New 

 Haven, Conn. , and in the American Museum of Natural His- 

 tory in New York City. 



