870 



CATALOGUE AND INDEX OF 



[BULL. 137. 



Silurian — Continued. 

 Appalachian— Continued. 



1879. Macfarlane's Geological Rail- 



road Guide, West Virginia., 

 Stevenson and Fontaine. 

 A study of rocks at Eondout, 

 N. Y., Lindsley. 



Macfarlane's Geological Rail- 

 road Guide, Georgia, Little. 



Macfarlane's Geological Rail- 

 road Guide, New Jersey, 

 Smock. 



Macfarlane's Geological Rail- 

 road Guide, Pennsylvania, 

 Lesley, J. P. 



Balcony Falls, Va., Campbell, 

 J. L. 



Macfarlane's Geological Rail- 

 road Guide, Virginia, Rogers, 

 W.B. 



Macluria magna near Newburg, 

 N. Y., Whitfield, E. P. 



Report of geologist of New Jer- 

 sey for 1879, Cook, G. H. 



Lake Superior copper rocks in 

 Pennsylvania, Blandy, Hunt, 

 T. S. 



Silurian formations in central 

 Virginia, Campbell, J. L. 



Age of slates and grits of 

 Poughkeepsie, N. Y., Dale. 



Fault at Eondout, N. Y., Dale. 



Virginia section across Appa- 

 lachian chain, Campbell, J. L. 



Handbook of Virginia, Pollard. 



Macfarlane's Geological Rail- 

 road Guide, New York, Mao- 

 farlane. 



Wappinger Valley limestones, 

 Dutchess County, N. Y., 

 Dwight. 



Section at Eondout, N. Y., Bar- 

 rett. 



Catoosa County, Ga., Vogdes. 



Second report of laboratory of 

 survey of Pennsylvania, Mc- 

 Creath. 



Eeport of survey of Alabama, 

 1877-78, Smith, E. A. 



1880. Recent investigations near 



Poughkeepsie, N. Y., Dwight. 



Arcadia iron property, Virginia, 

 Beckwith, Campbell, J. L. 



Western limit of Taconic sys- 

 tem, Ford. 



Silurian — Continued. 

 Appalachian — Continued. 



1880. Resources of Page Valley, Va., 



Prime. 



Resources of Shenandoah Val- 

 ley, Va., Hotohkiss. 



Country adjacent to James 

 River and Kanawha Canal, 

 Campbell, J. L. 



Minerals of southwestern Vir- 

 ginia, Ruffner. 



Fossils in Peach Bottom slates, 

 Lesley, J. P.; Frazer. 



Geology of Lancaster County, 

 Pa., Frazer. 



Rich Patch iron region, Vir- 

 ginia, Campbell, J. L. 



Geologic action of humus acids, 

 Julien. 



Limestone belts of Westchester 

 County, N. Y., Dana, J. D. 



Wappinger Valley limestone. 

 New York, Dwight. 



Purgatory property, Botetourt 

 County, Va., Campbell, J. L. 



Analyses of limestone, Cumber- 

 land County, Pa., Lesley, J. P. 

 Hudson fossil in slate in Mary- 

 land, Lesley, J. P. 



Lycoming and Sullivan coun- 

 ties. Pa., Sherwood andPlatt. 

 Relations of crystalline of east- 

 ern Pennsylvania, Hall, C. E. 



Genesis of iron ores, Newberry. 



Geology of Clinton County, Pa., 

 Chance, Lesley, J. P. 



Eeport on line of Richmond and 

 Southwestern Railway, Sha- 

 ler. 



Eesources of Brocks Gap, Va., 

 Campbell, J. L. 



Section at Low Moor, Va., 

 Wiokes. 



Iron ores of the Virginias, 

 Eogers, W. B. 



On Atops trilineatus of Emmons 

 [etc.]. Ford. 



1881. Mineral springs of Saratoga, N. 



Y., Fish, C-. 



Record of geology for 1879-80, 

 Hawes. 



Norfolk and Western and Shen- 

 andoah railroads, Hotchkiss. 



Unification of Silurian nomen- 

 clature, Miller, S. A. 



