2o6 The American Geologist. April, looo 
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Indiana building stones. Tenth Census U. S. 1880, v. 10. Report 
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Berea grit of Ohio. American Association for Advancement of 
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Great Kanawha coal fields. The Virginias, v. 3. pp. 6, 4°. 1882. 
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Lower coal measures of Ohio. Ohio Min. Jour. v. i. no. i. pp. 
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Growth and order of the lower coal measures of Ohio. Ohio 
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Source of the bituminous matter in the Devonian and sub-Car- 
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Gas wells of Ohio. Ohio j\Iining Journal, v. 2. no. i. pp. 185-193. 
1883. 
Ohio coal fields. Ohio IMining Journal, v. 2, no. i, pp. 43-46. 
1883. 
Source of bituminous matter of black shales of Ohio. American 
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Uses of Ohio Coal. Ohio Mining Journal, v. 2, no. i. pp. 18-23. 
1883. 
Massillon coal fields. Ohio IMining Journal, v. 3. no. i, pp. 32-38. 
1883. 
Iron ores of Ohio, considered with reference to their geological 
order and geographical distribution. Ohio Mining Journal, v. 2, no. 
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Constitution of Ohio coals. Ohio Mining Journal, v. 2, no i. pp. 
200-206. 1883. 
Building stones of Ohio. Geolog. Surv. of Ohio. v. 5. 1884. pp. 
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Mines of Vinton and Jackson Counties. (Coal seams of lower 
coal measures of Ohio, continued). Geolog. Surv. of Ohio. v. 5, 
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Coal seams of the lower coal measures of Ohio. Geological Sur- 
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Hocking Valley coal fields. (Continuation of the Lower Coal 
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Correlation of the lower coal measures of Ohio, and eastern Ken- 
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Iron ores of Ohio. Geological Survey of Ohio. v. 5. 1884. pp. 
371-435- 
