DAETOK.] 



NOETH AMEEICAN GEOLOGY. 



81 



Arkansas — Continued. 



1890. Warren's Geography, Brewer. 

 Choctaw coal field, Chance. 



1891. Appomattox formation, McGee. 

 Bauxite, Branner. 



Basic dikes outside of syenite 



areas, Kemp. 

 Comanche series of Texas, Arkan- 

 sas series, HiU. 

 Cretaceous of North America, 



White, C. A. 

 Crowleys Ridge, Call, Salisbury, 



Branner. 

 Devonian and Carboniferous, cor- 

 relation, Williams, H. S. 

 Fayetteville-Huntsville section, 



Harris. 

 Geology of Washington County, 



Simonds. 

 Geology of western Arkansas, 



Winslow. 

 Igneous rocks of Arkansas, Wil- 

 liams, J. F. 

 Introduction [Washington 



County], Branner. 

 Manganese deposits, Penrose. 

 Novaculites, Griswold. 

 Origin of manganese ores of 



northern Arkansas, Penrose. 

 Iteade's theory of origin of moun- 

 tain ranges, Keade. 

 Relationship of Pleistocene to 

 pre-Pleistocene, Ch amberlin 

 and Salisbury. 

 Stones for bnUding, Merrill, 



6. P. 

 Tabulation of dikes, Kemp and 



Williams. 

 Tertiary silicified woods. Call. 

 Titanic oxide [in soUs], Dun- 



niugton. 

 Topographic features of Arkansas 

 marble, Hopkins. 

 Aims, I. M. Clay concretions of the 

 Connecticut River. 



Canadian Eeo. of Sci., vol. 4, pp. 237-241, 

 1891. 

 Ashbumer, Charles A. A measured sec- 

 tion of the Paiaeozoic rocks of central 

 Pennsylvania, from the top of the Alle- 

 gheny River coal series down to the 

 Trenton limestone. 



Am. PhiL Soo., Proo., vol. 16, pp. 519-560, 

 1877. 



Abstract, Am. Jonr. Sci., 3d series, vol. 13, 

 pp.384-385(Jp.), 1877. 



Bnll. 127 fi 



Ashbumer, Charles A. — Continued. 



Report of the Aughwick Valley and 



East Broad Top district. 



2d Geol. Sarv. of Pennsylvania, Report F, 

 Keport of progress in the Jnniata district on 

 the fossil iron-ore beds of middle Pennsylva- 

 nia by John H. Dewees [etc.], pp. 141-260, 271- 

 284, 10 plates, Harrisburg, 1878. 



Abstract, Am. Jour. Sci., 3d series, voL 18, p. 

 149 (J p.), 1879. 



Oil-well records in McKeau and Elk 



counties. Pa. 



-im. Phil. Soo., Proc, vol. 18, pp. 9-26, 1880. 

 Abstract, with additional note. Am. Jour. 

 Sci., 3d series, vol. 16, pp. 393-394, 1878. 



The Bradford oil district of Penn- 

 sylvania. 



Am.' Inst. Mining Eng., Trans., vol. 7, pp. 

 316-328, 1879. 



On the constitution of the Bradford 



oil sand. 



Am. Phil. Soc., Proc, vol. 18, pp. 419-422, 

 plates, 1880. 



The geology of McKean County, and 



its connection with that of Cameron, 

 Elk, and Forest. 



2d Geol. Surv. Pennsylvania, Report R, xvi, 

 371 pages, atlas of 4 maps, plates, Harris- 

 burg, 1880. 



Abstract, Am. Jour. Sci., 3d series, vol. 21, 

 pp. 241-243, 1881. 



Notes of a, reconnaissance across 



the hills from Poulette to Sharon and 

 back » * * for the purpose of com- 

 paring the conglomerates covering the 

 hiUtops in Potter and McKean. 



2d Geol. Surv. Pennsylvania, Report GGG, 

 the geologyof Potter County, by Andrew Sher- 

 wood, pp. 97-105, Harrisburg, 1880. 



Renovo coal basin. 



2d Geol. Surv. Pennsylvania, Report G4, 

 geology of Clinton County by H. Martyn 

 Chance, pp. 73-78, map, Harrisburg, 1880. 



Map of part of the Mahanoy and 



Shenandoah basins in the second an- 

 thracite coal field, showing the shape 

 of the floor of the mammoth bed by 

 contours 50 feet apart [etc.]. 



2d Geol. Surv. Pennsylvania, Report A2, 

 special report on waste in mining anthracite 

 by F. Piatt, pocket in back, Harrisburg, 

 1881. 



Am. Inst. Mining Eng., Trans., vol. 9, plate 

 1, 1881. 



Brazos coal field, Texas. 



Am. Inst. Mining Eng., Trans., voL 9, pp. 

 495-506, 1881. 



Abstract, Am. Jour. Sci., 3d series, vol. 22, p. 

 152 (i p.), 1881. 



