BABTON.] 



NORTH AMERICAN GEOLOGY. 



715 



Ohio — Continued. 



1886. Petroleum and gas in Ohio, Orton. 

 Classification of Upper Devo- 



nian,William8, H. S. 

 Address to American Association, 



Orton. 

 Geology of Cincinnati, James, 



J.F. 

 Clinton group, Foerste. 

 Characteristics of Ohio coals, 



Orton. 

 Iron ores, Willis. 

 Report on oU and gas. Prion, E. 



1887. Distribution of natural gas, Ash- 



humer. 



Map of United States, Hitchcock, 

 C.H. 



Bowldets at high altitndes,White, 

 I.e. 



Clinton group, Foerste. 



Connection of coal fields of Ohio 

 Valley, Shaler. 



Gas ■well at Oxford, James, J. F. 



Geological survey, report on pe- 

 troleum and gas, Orton. 



Geology of Licking County, Her- 

 rick. 



Lake age, Claypole. 



1888. Age of the Ohio gravel beds, 



Wright, 6. F. 



Ancient channel of Ohio at Cin- 

 cinnati, James, J. F. 



Berea grit in northeastern Ohio, 

 Cnshlng. 



Berea grit oil and gas, Orton. 



Cements, Lord. 



Coal, Ashbumer. 



Correlation of Lower Silurian, 

 Ulrich. 



Diameter of the Silurian island 

 about Cincinnati, Dennis. 



Drift, Orton. 



Drift in vicinity of Cincinnati, 

 Burke. 



Origin of petroleum and gas, 

 Orton. 



Supplemental report on gas and 

 oil, Orton. 



Licking County, Herrick. 



Geology of Ohio, in its relations 

 to oil and gas, Orton. 



Gypsum, Orton. 



Ivorydale -well in Mill Creek val- 

 ley, James, J. F. 



Lime, Orton. 



Ohio shale oil and gas, Orton. 



Ohio — Continued. 



1888. Pittsburg coal. Brown, C. X. 

 Pomeroy and Federal Creek coal 



field, Lovejoy. 

 Section at Todd's fork, Foerste. 

 Subterranean commotion near 



Akron, Claypole. 

 Trenton limestone oil and gas, 



Orton. 

 Types of Devonian system in 



North America, Williams, H. S. 



1889. Devonian plants, Newberry. 

 New horizons of gas and oil, Or- 

 ton. 



Physical history of Cincinnati 



rocks. Perry. 

 Sedimentation in Cincinnati 



group, James, J. F. 

 Sporocarps in Ohio shale, Orton. 

 Waverly group, Herrick. 

 Petroleum and gas in Ohio, Orton. 

 Bnilding stones, Merrill, 6. P. 

 Trenton limestone oil and gas, 



Orton. 

 Analyses of limestones, Catlett, 



Whitfield, J. E. 



1890. Analyses of sandstones, Eakins, 



Clarke, F. W. 

 Bowlder belts and bowlder trains, 



Chamberlin, T. C. 

 Cave in Clinton formation, James, 



J.F. 

 Climate indicated by interglacial 



bed, Leverett. 

 Glacial boundary, Chamberlin, T. 



C. ; Wright, G. F. 

 History of Niagara River, Gil- 

 bert, G. K. 

 Lake ridge of Ohio, Wright, G. F. 

 Greological survey report, Orton. 

 Macfarlane's Railway Guide, 



Chamberlin, T. C; Orton, 



White, I. C. ; Wright, G. F. 

 Origin of pressure of gas, Orton. 

 Portsmouth sandstones, analyses, 



Chatard. 

 Pre-Glacial channels at Falls of 



the Ohio, Bryson. 

 Pre-Glacial drainage of western 



Pennsylvania, Foshay. 

 Report on oil and gas, Carll. 

 Some causes of extinction of 



species, McCreery. 

 Sylvania sand in Cuyahoga 



County, Neff. 

 Waverly group. Cooper, W. F. 



