DAETON.] 



NORTH AMERICAN GEOLOGY. 



747 



Petrography — Continued. 

 1881. Turquoise of New Mexico, Silli- 

 man, B.,jr. 



Progress of investigations in New 

 Brunswick, Bailey, L. W. 



Report on counties of No va Scotia, 

 Fletcher, H. 



Albany granite and contact phe- 

 nomena, New Hampshire, 

 Hawes. 



Cupriferous series of Minnesota, 

 "Winohell,N.H. 



Reconnaissance in San Francisco, 

 Eureia, and Bodie districts, 

 Becker. 



Felsites and associated rocks 

 'north of Boston, Diller. 



Micro-character of vitreous rooks 

 of Montana, Eutley. 



Various massive rocks made in 

 onemetamorphio prooe88,Dana, 

 J. D. 



Analyses of minerals and rocks 

 from Bucks, Philadelphia, and 

 Montgomery counties, Pennsyl- 

 vania, Genth. 



Banded amygdules of Brighton 

 amygdaloid, Davis, W. M. 



List of crystalline rocks from 

 northern Minnesota, Winohell, 

 N.H. 



Elongation of pebbles, Wads- 

 worth. 



Crystallines of Guiana and Brazil, 

 Crosby. 



Geography and geology of Trini- 

 dad, Crosby. 



Examinations in Colorado and 

 New Mexico, Stevenson. 



Passage of sediments to volcanic 

 in Brighton, Mass., Shaler. 



Origin of iron ores of Marquette, 

 Wadsworth. 



Geology of Philadelphia County, 

 etc., Pennsylvania, Hall, C. E. ; 

 Lesley, J. P. 



Menominee and Marquette iron 

 region, Eominger. 



Iron ore of Bartlett, N. H., Hunt- 

 ington. 



Record of geology for 1879-80, 

 Hawes. 



Origin of petrosiliceous rocks, 

 Crosby. 



Northern New Brunswick, Ells. 



Whopper lode, Gunnison County, 

 Colo., Frazer. 



P etrography — Continued . 



1881. Melaphyre of Brighton, Mass., 



Benton. 



1882. Thin sections of cupriferous series 



of Minnesota, Winohell, N. H. 



So-called Leadville porphyry, 

 Julien. 



Geologic du sud-est de la Penn- 

 sylvanie, Frazer. 



Thin sections of cupriferous rocks 

 in Minnesota, Winohell, N. H. 



List of rocks of Minnesota, Win- 

 ohell, N. H. 



Serpentine of Staten and New 

 York islands, .Tulien. 



Summary of geology of Comstock 

 lode, Becker. 



Volcanic drift of Challis, Idaho, 

 Julien. 



Nomenclature of massive crystal- 

 line rooks, Jackson, A. W. 



Geologisches und Montanistisches 

 aus Utah, Oohsenius. 



Geology of Comstock lode and 

 Washoe district, Becker. 



Report of work in Eureka dis- 

 trict, Hague, A. 



Composition of Mesozoic diabase 

 of Atlantic Slope, Hawes. 



Deerfield dike, Massachusetts, 

 Emerson. 



Proposed system of lithologic 

 nomenclature, Chamberlin, 

 T. C. 



Diabase dikes at Franklin fur- 

 nace, New Jersey, Emerson. 



Tufa from Florissant, Colo., 

 Wadsworth. 



Crystallines of the Wisconsin 

 Valley, Irving, Van Hise and 

 Clark. 

 •Geology of eastern Lake Superior 

 district, Irving, R. D. 



Elaeolite-syenite dikes in north- 

 western New Jersey, Emerson. 



Marquette iron region. School of 

 Mines. 



Report on survey of New Jersey 

 for 1882, Cook. 



Archean of Cobequid Mountain, 

 Honeyman. 



Microexamination of Archean 

 from Flambeau Valley, Irving, 

 R.D. 



1883. Argillites and associates at Brain- 



tree, Mass., Dodge. 



