304 PROCEEDINGS OF THE OHIO ACADEMY OF SCIENCE. 



in cooperation with the Geological Society of America, of which, 

 in reality, it is an out-growth. 



The remarkable literature, both in volume and content, ac- 

 cumulated by paleontologists has necessitated the publishing of 

 bibliographic indexes by the Federal Survey and the U. S. Na- 

 tional Museum. The high standard of publications, particularly, 

 in the great expense required for the plates produced, by both 

 the Federal and State Surveys, attests the sustained interest of 

 the public, and the productiveness of the workers, in this field 

 of geology. 



Geological Survey of Ohio. The formation of the Third 

 Survey of this state was almost coincident with the founding of 

 the Ohio Academy of Science. When J. S. Newberry withdrew 

 from the office of state geologist, the survey activities were 

 placed in the hands of Edward Orton, Sr., who completed the 

 work then under way, that is volumes V and VI and "A Pre- 

 liminary Report on Petroleum and Natural Gas", embracing in 

 all 193 1 pages, before proceeding with his own plans as state 

 geologist. Professor Orton in addition to a report on Botany 

 and another on Archeology, published about 1200 pages, divided 

 almost equally between economic subjects, and stratigraphy and 

 paleontology. 



The Fourth Survey was formed in 1899 with Professor Ed- 

 ward Orton, Jr., as state geologist. Under his direction the sur- 

 vey published 1825 pages; 79.8% was devoted to economic 

 geology, and of the remainder, 332 pages consisted of a bibli- 

 ography of geologic papers relating to Ohio, and 36 pages were 

 devoted to the "Nomenclature of geological formations." 



In 1906 Professor John Adams Bownocker was appointed 

 State Geologist. During the nine years to date. Professor Bow- 

 nocker, in addition to a new geological map of Ohio, has pub- 

 lished 2872 pages, apportioned as follows: historic, 45.9% ; the 

 economic, 51.9% ; the remainder, physiographic. It should be 

 noted, however, that other physiographic problems have been 

 under investigation for several years. Under no other State 

 Geologist have the activities of the Survey been more generally 

 distributed among different phases of geology. 



