THE MORRISON FORMATION 669 



It is the misfortune of geology to be more or less dependent on this branch 

 of specialists. Without their specific determinations the geological maps, even, 

 cannot receive their ultimate color designations, nor can reports, which, like 

 ours, involve a wide range of stratigraphy, be safely written. 



It may seem autocratic, but in these days the paleontologist 

 insists, not only that his specific determinations must be used, but 

 that he must be consulted as to the interpretation that is placed 

 upon his lists, and especially he insists that the geologist must know 

 what horizon yielded the fossils under discussion before he uses 

 them in stratigraphy and correlation. 



