BIBLIOGRAPHY OF EDWARD ORTON 549 



The Berea grit as a source of oil and gas in Ohio. Ibid., pp. 311-409, 2 pis., 1 map. 



The Ohio shale as a source of oil and gas in Ohio. Ibid., pp. 410-442. 



Gypsum or land-plaster in Ohio. Ibid., pp. 696-702. Reprinted, with unimportant 



changes, in U. S. Oeol. Survey, Min. Resources for 1887 , 1888, pp. 596-601. 

 The production of lime in Ohio. Ibid., pp. 703-771. 

 The drift deposits of Ohio. Ibid., pp. 772-782. 



Supplemental report on the new gas fields and oil fields of Ohio. Ibid., pp. 783-792. 

 Review of the westward extension of the Hocking Valley coal field. Ohio Min. 



Jour., whole no. 18, 1889, pp. 7-21. 

 Natural gas. Ibid., pp. 28-30. 

 The Trenton limestone as a source of petroleum and inflammable gas in Ohio and 



Indiana. Eighth Ann. Rept. U. S. Geol. Survey, part ii, 1889, pp. 475-662. 

 Discovery of sporocarps in the Ohio shale. [Abstract. ] Proc. Am. Assoc. Adv. Sci., 



37th meeting, 1888, pp. 179-181. 1889. 

 The new horizons of oil and gas in the Mississippi valley. [Abstract.] Ibid., pp. 



181-182. 

 The geography and geology of Ohio. [Preceded by a biography of the author.] 



Historical Collections of Ohio, Centennial edition, vol. i, 1889, pp. 59-89. 

 First Annual Report of the Geological Survey of Ohio (third organization), x + 



323 pp., 4 pis., 3 maps. 1890. 

 On the origin of the rock pressure of the natural gas of the Trenton limestone of 



Ohio and Indiana. Amer. Jour. Sci., third series, vol. xxxix, 1890, pp. 225-229. 

 Professor Edward Orton's talk on the origin of the rock pressure of natural gas in 



the Trenton limestone of Ohio and Indiana. Ohio Min. Jour., whole no. 19, 



1890, pp. 32-41. 



Origin of the rock pressure of natural gas in the Trenton limestone of Ohio and 

 Indiana. Bull. Geol. Soc. Am., vol. 1, 1890, pp. 87-97. Reprinted in Smith- 

 sonian Institution Ann. Rept. for 1890-91, 1893, pp. 155-162. 



Geological formations found in Ohio. Macfarlane" 's Amer. Geol. Railway Guide, sec- 

 ond edition, 1890, pp. 177-187. 



On the occurrence of Megalonyx jeffersoni in central Ohio. [Abstract.] Bull. Geol. 

 Soc. Am., vol. 2, 1891, p. 635. 



Municipal corporations and natural gas supply. Ohio Min. Jour., w T hole no. 20, 

 1892, pp. 10-20. 



Report on the occurrence of petroleum, natural gas and asphalt rock in western 

 Kentucky, based on examinations made in 1888 and 1889. Geol. Survey Ken- 

 tucky, 233 pp., 3 pis., 3 maps. [1892.] 



On the occurrence of a quartz boulder in the Sharon coal of northeastern Ohio. 

 Amer. Jour. Sci., third series, vol. xliv, 1892, pp. 62-63. 



Geological scale and geological structure of Ohio. Geol. Survey Ohio, vol. vii. 

 Economic geology. Archeology. Botany. Paleontology, [part i], pp. 3-44, 

 1 pi. 1893. 



The clays of Ohio, their origin, composition and varieties. Ibid., pp. 45-68. 



The coal fields of Ohio. Ibid., pp. 255-290, 10 maps. 



From the Ohio river to Chicago. Itinerary [of excursion of International Geolog- 

 ical Congress]. Congres geol. internal., Compte rendu de la 5 me sess., Washington, 



1891, pp. 291-298. 1893. 



The stored power of the world. Ohio Min. Jour., whole no. 21, 1894, pp. 102-121, 

 lpl. 



