Barton.} 



NORTH AMERICAN GEOLOGY. 



47 



Arcbeau and Algonkian — Coutinued. 

 Maryland to Alabama — Continued. 

 1884. Paramorphosis of pyroxene to 

 hbrnblende, 'Williams, G. H. 



Microsoopio structure of build- 

 ing stones, Merrill, G. P. 

 188.5. Map of United States, McGee. 



Handbook of Virginia, Har- 

 rison. 



Potsdam east of Blue Ridge in 

 Virginia, Campbell, H. D. 



St. Mary iron property, Vir- 

 ginia, Campbell, J. L. 



Dikes of apparently eruptive 

 granite near Baltimore, Wil- 

 liams, G. H. 



Review of geology of Dela- 

 ware, Chester. 



Strata in shaft of waterworks 

 at Washington, Robinson, T. 



Crystallines of Alabama,Hitch- 

 cook, C. H. 



Rogers's geology of the Vir- 

 ginias, Campbell, J. L. and 

 H.D. 



Greenway iron belt of James 

 River, Kimball. 



1886. Iron ores in Alabama, Willis. 

 Studies of gabbros, etc., in Del- 

 aware, Chester. 



Pyrite deposits of the Allegha- 

 nies, Wendt. 



Gabbros of and associates near 

 Baltimore, Williams, G. H. 



Samples of iron ore, North 

 Carolina, east Tennessee, 

 Willis. 



Report of division of chemis- 

 try, TJ. S. Geological Survey, 

 Clarke, F. W. 



1887. Gneiss-dunyte contacts of Co- 



rundum Hill, N. C, Chat- 

 ard. 



Residue from decay of schists 

 near Cary, N. C, Riggs. 



Tin in North Carolina, Van Ness. 



Notes in Virginia, North Caro- 

 lina, etc., Britton, N. L. 



Map of the United States, 

 Hitchcock, C. H. 



1888. Archean geology of Maryland, 



Williams, G. H. 

 Baltimore region, Williams, 



G.H. 

 Rocks near Ilchester, Md., 



Hobbs. 



Archean and Algonkian — Continued. 

 Maryland to Alabama — Continued. 



1888. Mica mining in North Carolina, 



Phillips. 

 Peridotite at Webster, N. C, 



Diller. 

 Contact phenomena in South 



Carolina, Richards. 



1889. Mineralogy of Maryland, Wil- 



liams, G. H. 

 Tin in North Carolina, Fur- 

 man. 



1890. Gabbros of Delaware, Ches- 



ter. 



Nonfeldspathic intrusives of 

 Maryland, Williams, G. H. 



Vicinity of Baltimore, Wil- 

 liams, G. H. 



Gold of Montgomery County, 

 Md., Emmons, S. F. 



Analyses of rocks, Baltimore 

 County, Md., Whitfield, J. E. ; 

 Chatard. 



Analysis of marble from 

 Cockeysville, Md., Whitfield, 

 J.E. 



Corundum in Patrick County, 

 Va., Genth. 



Macfarlane's Railway Guide, 

 Chester, Fontaine, Ham- 

 mond, McCutchen, Safford, 

 Campbell, Williams, G. H. ; 

 Chance. 



Warren's Geography, Brewer. 



Fauna of Lower Cambrian, 

 Walcott. 



Crystalline rocks of Maryland, 

 Williams, G. H. 



1891. Haile mine. South Carolina, 



Thies and Mezger. 



Iron ores of Virginia, Pechin. 



Piedmont Plateau, Maryland, 

 Williams, G. H. 



Geology of Washington, Wil- 

 liams, G. H. ; McGee. 



Anglesite from Maryland, Wil- 

 liams, G. H. 



Excursion across the Appala- 

 chians, Williams, G. H. 



Geological survey of Georgia, 

 Spencer. 



Structure of the Blue Ridge, 

 Keith and Geiger, Hitchcock, 

 C.H. 



Section across the Piedmont 

 Plateau in Maryland, Keyes. 



