DABTON.] 



NORTH AMEKICAN GEOLOGY. 



39 



Archean and Algonkian — Continued. 

 New York, New Jbksey, and Penn- 

 sylvania — Continued. 



1881. Mineral springs of Saratoga, 



N. Y., Fish, C. 



Serpentine in Radnor Town- 

 ship, Pa., Hand. 



Peculiar stratification of gneiss 

 near Philadelphia, Rand. 



Serpentine in Berks County, 

 Pa., Lewis, H. C. 



Age of rocks of New York 

 Island, etc., Britton, N. L. 



Greology of Staten Island, Brit- 

 ton, N.L.; Dana, J. D. 



1882. Notes on Staten Island, Britton, 



N.L. 



Rocks of New York and Staten 

 Island and on drift, New- 

 berry. 



Geologic de la sud-est de la 

 Pensylvanie, Frazer. 



Age of the Taconic system, 

 Dana, J. D. 



Pot-holes near Williams 

 Bridge, N. Y., Britton, N. L. 



Report on survey of New Jersey 

 for 1882, Cook, G. H. 



Diabase dikes at Franklin Fur- 

 nace, N. J., Emerson. 



Serpentine of Staten and New 

 York islands, Julien. 



Mineral localities around New 

 York City, etc., Darton. 



1883. Horizon of South VaUey Hill 



rocks in Pennsylvania, Fra- 

 zer. 



Geology of Philadelphia Coun- 

 ty, Pa., by Hall, Frazer. 



Review of geology of Chester 

 County, Pa., Rand, Frazer, P. 



Rand on Chester County, Pa., 

 Frazer. 



Report of geological survey of 

 Pennsylvania, Frazer. 



Report of survey of New Jersey 

 for 1883, Cook, G. H. 



Rand on Chester and Delaware 

 counties. Pa., Frazer. 



Geology of the Chester Valley 

 of Pennsylvania, HaU, C. E. 



Amphibole granite from Syene, 

 Stelzner. 



Decay of rocks, Hunt, T. S. 



Geology of Berks County, Pa., 

 Invelliers, d'. 



Archean and Algonkian — Continued. 

 New York, New Jersey, and Penn- 

 sylvania — Continued. 



1883. Lower Merion and vicinity. 



Pa., Rand. 

 Notes on Radnor and vicinity, 



Pa., Rand. 

 Geology of Port Henry, N. Y., 



Hunt, T. S. 

 Serpencine of Staten Island, 



Hunt, T. S. 

 History of serpentine and notes 



on pre-Cambrian rocks, 



Hunt, T. S. 

 Geology of Philadelphia, Fra- 

 zer, Lewis, H. C. 

 Relations at serpentine quarry, 



Chester County, Pa., Brin- 



ton, J. H. 

 South Mountain gneiss. Pa., 



Hall, E. E. 

 Serpentine beds of Chester 



and Delaware counties. Pa., 



Wilcox. 

 Genesis of crystalline iron ores, 



Julien. 

 Geology of Hudson County, 



N. J., Russell, I. C. 

 Geology of Lehigh and North- 

 ampton counties, Pa., Les- 

 ley. 

 Geology of Chester County, 



Pa, Lesley, J. P. ; Hall, C. E. ; 



Frazer. 

 Geology and copper of Adams 



County, Pa., Bailey, J. T. ; 



Frazer. 

 Lower Merion and vicinity. 



Rand. 

 Geology of Richmond County, 



N.Y., Britton, N.L. 

 Granite at Sparta, N. J., Darton. 

 Iron mines of New Jersey, 



School of Mines. 



1884, Illustrations of polished rock 



surfaces, Morgan, H. J. 



Various massive rocks made in 

 one metamorphic process, 

 Dana, J. D. 



Copper deposits of South Moun- 

 tain, Henderson. 



Peach Bottom slates, Frazer. 



Notes on building stones used 

 in New York, Newberry. 



Age of Philadelphia gneiss, 

 Frazer. / 



