MARYLAND GEOLOGICAL SURVEY 43 



1908 



STOSE, GEORGE W. The Cambro-Ordovician limestones of the Appa- 

 lachian Valley in southern Pennsylvania. 

 Jour. Geology, vol. xvi, No. 8, pp. 698-914, 1908. 



BASSLER, KAY S. Cement materials of Western Virginia. 

 Econ. Geology, vol. iii, No. 6, pp. 503-524, 4 figs., 1908. 



PEABODY, CHARLES. The exploration of Bushey cavern, near Cave- 

 town, Maryland. 



Phillips Academy, Andover, Massachusetts, Dept. of Archaeology, Bull, iv, 

 pt. 1, pp. 3-25, 8 pis., 1908. 



1909 



MATHEWS, EDWARD BENNETT, and GRASTY, JOHN SHARSHALL. Ee- 

 port on the limestones of Maryland, with special reference to their use in 

 the manufacture of lime and cement. 



Maryland Geol. Survey, vol. viii, pp. 225-477, 14 pis., 12 figs., 1909. 



BASSLER, KAY S. The Cement Resources of Virginia west of the Blue 

 Kidge. 



Virginia Geol. Surv., Bull No. 2A, 309 pp., 30 pis., 30 figs., 1909. 



1910 



SCHUCHERT, CHARLES. Paleogeography of North America. 

 Geol. Soc. America Bull., vol. xx, pp. 427-606, 56 pis. 



STOSE, GEORGE W. Description of the Mercersburg-Chambersburg dis- 

 trict, Pennsylvania. 



U. S. Geological Survey, Geol. Atlas U. S., Mercersburg-Chambersburg folio 

 (No. 170), library edition, 19 pp., 8 pis. (maps, sections, and illustrations 

 sheets), 5 figs., 1909; field edition, 144 pp., 6 folded maps, 10 pis., 4 figs., 1910. 



Describes the topographic features, the general geology, the occurrence, character, 

 and relations of pre-Cambrian volcanic rocks, and of Cambrian, Ordovician, Silurian 

 and Devonian formations, and geologic structure, the geologic history, and the economic 

 resources. 



1911 



ULRICH, EDWARD 0. Revision of the Paleozoic Systems. 

 Geol. Soc. America, Bull. vol. xxii, No. 3, pp. 281-680, 5 pis. 



