752 



CATALOGUE AND INDEX OP 



[BnLL,127. 



Petrography— Continued. 



1889. i Building stones of the United 



States, Merrill, G. P. 

 Geology of Cape Ann, Shaler. 

 Monazite in, rocks, Derby. 

 Fernando Noronha, jietrography, 



Gill, Williams, G. H. 

 Leucite roek, Absaroka range, 



Wyoming, Hague, Iddings. 

 Pike County peridotite, Arkan- 

 sas, Brackett. 

 Gneiss bowlder in Hajifax coal, 



Spencer, J. 

 Traps of Cppnecticut Valley, 



Davis and Whittle. 

 Petrogra-phy of gand wich Islands, 



Dana, E. S. 

 Mineralogy of Maryland, Wil- 

 liams, G. H. 

 Paragenesis , of aUanite and 



epidote, Hobbs. 

 Granites of the Northwest, Hall, 



C.W. 

 ; Northeastern Minne|B0ta, Win- 



chell, H. V. 

 Character of Trenton limestone, 



Minnesota, Hall, C. W. 

 Porphyrite of northwestern New 



Jersey, Kemp. 

 , Eruptive rooks of Minnesota, 



Winchell, N. H. 

 Serpentines of Montville, N. J., 

 , Merrill, G. P. 

 Camptonite dike, Washington 



County, , N. Y., Kemp and 



Marsters. 



1890. Hjuronianand Laurei^tia'n north 



of Luke Huron, Barlow, Law- 

 son. 



Eeport— Di vision of petrography, 

 United States Gsologioal Sur- 

 vey, Diller. 



Greenstone schists, Michigan, 

 Williams, G. H. 



Archean of central Canada, Law- 

 son. 



Eruptives of Lake Huron region, 

 Fairbanks, 



Copper in Animikie at Thunder 

 Bay, Lawson, 



Origin of soda granite, etc., 

 Pigeon Point, Bayley. 



Certain dikes of R^iny Lake 

 region, Lawson and Shutt. 



Notes on Big Bend of the Co- 

 lumbiaj Coleman. 



Petrography— COT<4niied. 

 1890. Granitoid areas in lower Lauren- 

 tial, Hitchcock, C. H. 

 i Bernardston series of upper 

 Devonian, Emerson. 



Trap dikes near Kesnebunkport, 



.i Me., Kemp. 



Triassio traps of, Kova Scotia, 

 Marsters. 



Dikes in Appalachian Virginia, 

 Diller. 



Notes from Baja California, 

 , Mexico,. Lindgren. 



Bocks from Montana, Merrill, 

 G.P. 



Eruptive : rocks of Boulder 

 County, Colo., Palmer. 



Volpanicrooks fi;om Tewan Moun- 

 tains, N.,Mex., Iddings. 



Igneous rocks of Yellowstone 

 Part, Iddings. 



Payalite in obsidian of Lipari 

 Iddings and Penfield. 



Basalt from Pilot J^nob, Tex., 

 Kemp. 



Origin of gneiss, Bell. 



Observations in, Norway, Wil- 

 liams, G. H. 



Secondary minerals of ampbibole 

 and pyroxene groups, Cross. 



Petrography for 1887 and 1888, 

 Merrill, G. P. 



Eocks of Essex (^punty, Mass., 

 Lewis. 



Granites of Massaphnsetts, Emer- 

 son. 



Crystalline rocks , of Missouri, 

 Haworth. 



Pre-Camhrian of the, Black Hills, 

 Van Ilise. 



Metamorphic strata of southeast- 

 ern New York, Merrill, F. J. H. 



Magnetic rocks, Arizona and Cali- 

 fornia, Hanks. 



Archean rocks. New Jersey, Na- 

 son. 



Zircon rocks in Highlands of New 

 Jersey, Nason and Ferrier. 



Noufeldspathic intrusives of 

 Maryland, Williams, G. H. 



Traps of Newark system in New 

 Jersey region, Darton. 



Mother lode region, California, 

 Fairbanks. 



Syracuse serpentines, Williams, 

 6. H. 



