DABTON.] 



NORTH AMERICAN GEOLOGY. 



871 



Silurian — Contiimed. 

 Appalachian — Continued. 



1881. Bone caves of .Pennsylvania, 



Leidy. 



Fossils in Wappinger limestone, 

 Dwight. 



Little mountains east of the 

 Catskills, Davis, W. M, 



Alabama north of the Tennes- 

 see, MoCalley. 



Third report of laboratory of 

 survey of Pennsylvania, 

 McCreath. 



Report on sur \'ey of New Jersey 

 for 1881, Cook, G.H. 



Bratton Run basin, Va., Hotch- 

 kiss. 



Construction of cross sections. 

 Chance. 



Colonies dans les roches Tacon- 

 iques des bords du Lac 

 Champlain, Marcou, J. 



Geology of Philadelphia Coun- 

 ty, etc., Pa., HaU, C.E.; Les- 

 ley, J. P. 



Geology of Blair County, Pa., 

 Piatt, F. 



Craig Creek basin, Va., Hotch- 

 kiss. 



1882. Report on survey of New Jersey 



for 1882, Cook, G. H. 



Survey of Delaware Water Gap, 

 Chance. 



Geology of Van Buren furnace 

 estate, Va., Hotchkiss. 



Models of parts of central Penn- 

 sylvania, Lesley, J. P. 



Wise, Lee, and Scott counties, 

 Va., Stevenson. 



Fossils of formation No. Ill in 

 Virginia, Rogers, W. B. 



Notes on the geology of the 

 Virginias, Rogers, W. B. 



Drift hematite in eastern Ten- 

 nessee, Nichols. 



Geology of West Virginia, rec- 

 tification of Jones's section, 

 White, I. C. 



Section at SohuylkiU Gap, Pa., 

 Chance. 



Geology of Pike and Monroe 

 counties. Pa., White, I. C. ; 

 Lesley, J. P. 



Faults of southern Virginia, 

 Lesley, J. P. 



Silurian — Continued. 

 Appalachian — Continued. 



1882. Resources of southwestern Vir- 



ginia, Stevenson, J. J. 



Resources between Great Val- 

 ley and Potomac coal basin, 

 Hotchkiss. 



Eloeolite-syenite dikes in north- 

 western New Jersey, Emer- 

 son. 



Age of the Taconic system, 

 Dana, J. D. 



Lehigh Gap, Pa., Chance. 



Reconnaissance of Lee, Scott, 

 Wise, and Washington coun- 

 ties, Va., Stevenson. 



Niagara River, Ballou. 



Geology of Bedford and Fulton 

 counties, Stevenson, Lesley, 

 J. P. 



1883. Progress of geology, 1882, 



Hunt, T. S. 



Age of southern Appalachians, 

 Elliott. 



Geology of Philadelphia, Fra- 

 zer, Lewis, H. C. 



Fossil ores of Lycoming 

 County, Pa., Myer, A. 



Two distinct beds of iron ore 

 in Bradford County, Pa., 

 Claypole. 



Geology of Lehigh and North- 

 ampton counties, Pa., Lesley, 

 J. P. 



South Mountain gneiss, Penn- 

 sylvania, Hall, E. E. 



Becraft Mountain, N. Y., Davis, 

 W.M. 



Limestone region and Potsdam 

 sandstone, Lehigh and 

 Northampton counties. Pa., 

 Prime. 



Utica and related horizons, 

 Collins, H. C. 



Chemist's report, bore holes at 

 Onondaga, N. Y., Engelhart. 



Resources of James River val- 

 ley, Va., Campbell, J. L. 



Westward thinning of Paleo- 

 zoics, Lesley, J. P. 



Iron ores of middle James 

 River, Frazer. 



Southwestern Virginia, 

 Hogg, J. 



Report of survey of Alabama, 

 Smith, E. A. 



