Edward Ortofi. — White. 207 
Stratigraphical order of the lower coal measure of Ohio. Geo- 
logical survey of Ohio. v. 5, 1884. PP- 1-128. 
Mines of Scioto and Lawrence Counties and of the western part 
of Gallia County. (Coal seams of lower coal measures of Ohio, con- 
tinued). Geological Survey of Ohio. v. 5, 1884. pp. 1035-1058. 
Mines of Muskingum, Licking and the northern half of Perry 
Counties. (Coal seams of lower coal measures of Ohio, continued). 
Geological Survey of Ohio. v. 5, 1884. pp. 868-911. 
Massillon coal fields. (Coal seams of lower coal measures of 
Ohio, continued). Geological Survey of Ohio. v. 5, 1884. pp. "/"^y 
815. 
Ohio, Encyclopedia Britannica. 9th ed. v. 17, pp. 734-738. (J. T. 
Short and Edward Orton). 1884. 
Natural gas wells of northwestern Ohio. Science, v. 5, 1885. p. 
474- 
Petroleum in the study of coal, with a sketch of recent progress 
in geology. American Assoc'n for the Advancement of Science, v. 
34, 1885. pp. 173-197- 
Year's progress in geology. (Address of the Vice-Pres. Am. As- 
so'n for the Adv. of Sci.) Am. Asso'n for the Adv. of Sci. Proc. v. 
34, 1885, pp. 173-179- 
Salt and bromine production in Ohio. Ohio Mining Journal, v. 
3, no. 2, 1885. pp. 7-14. 
Horizons of petroleum and inflammable gas in Ohio. (Abstract). 
American Association for the Advancement of Science, Proceedings. 
V. Zi- PP- 397-398. 1885. 
Petroleum and natural gas as found in Ohio. Science v. 7, 1886. 
pp. 560-564. 
Present production of petroleum and natural gas in Ohio. Am. 
M'f'r, Aug. 6, p. 13, and Aug. 20, p. 13, 1886. (Extracts from ad- 
vance sheets, reports on petroleum and inflammable gas.) 
Recently discovered sources of natural gas and petroleum in 
northwestern Ohio. Am. Assoc'n for the Adv. of Science, v. 34, 
1886, pp. 202-204. 
Characteristics of the Ohio coals. Tenth Census of the United 
States. V. 15, Mining Industries 1886. pp. 619-622. 
Record of the deep well of the Cleveland Rolling Alill Co. (Ab- 
stract). Am. Assoc'n for the Adv. of Sci., Proceedings, v. 34, 1886. 
pp. 220-222. 
Findlay field. American Manufacturer. Art. 4, May 27, 1887. p. 
13- 
Petroleum and gas, preliminary report. Geolog. Surv. of O. 1887. 
200 pp. 
Natural gas in Ohio. Am. M'f'r, April 30, 1886, p. 15; also, U. S. 
Geolog. Surv., mineral resources for 1887, pp. 479-484. 1888. 
Geology of Ohio considered in its -relation to petroleum and na- 
tural gas. Geological Survey of Ohio. v. 6. 1888. pp. 1-59. 
