bAftTON-i 



NORTH AMERICAN GEOLOGY. 



753 



Petrography — Continued. 



1890. Serpentinons roolss, N&w York 



and Pennsylvania, Merrill, 6. P. 



Serpentines of southeastern Penn- 

 sylvania, Eand. 



Penokee iron series, Irving and 

 Van Hise. 



Structure of oolite, Barbour. 



Trenton limestone, Ohio and In- 

 diana, Orton. 



1891. Alunite and diaspore from Rosita 



hills, Colorado, Cross. 



Minerals in spherulites, Glade 

 Creek, Wyo., Iddings and Pen- 

 field. 



Constitution and origin of spher- 

 ulites, Cross. 



Sphemlitio crystallization, Id- 

 dings. 



Mount Diablo, Cal., Turner. 



Late volcanic eruption in north- 

 ern California, Diller. 



Report United States Geological 

 Survey, Powell. 



Granites from British Columbia, 

 Alaska, etc., Adams, F. D. 



Drift rocks of central Ontario, 

 Coleman. 



Metallic iron on St. Joseph Island, 

 Lake HuroUj Hoflfmann. 



Petrographic differentiation in 

 dikes of Rainy Lake region, 

 Lawson. 



Marquette' and Keweenaw dis- 

 tricts, Wadsworth. 



Iron ores of Minnesota, Winchell, 

 N.H. 



Steep Rock Lake region, Smyth. 



A last word with the Huroniarn, 

 Winchell, A. 



Penokee iron series, Irving and 

 Van Hise. 



Introduction to study of petrol- 

 ogy, Hatch. 



Petrographical tables^ Lane. 



Tabulation of igneous rocks, 

 Adamsj F. D. 



Xenotime as an accessory element 

 in rocks, Derby. 



Igneous rocks of Arkansas, Wil- 

 liams, J. F. ; Kemp and Wil- 

 liams. 



Dikes outside the syenite areas 

 of Arkansas, Kemp. 



Dike in Minnesota River valley. 

 Hall, C.W. 



Bull. 127 48 



Petrography — Continued. 

 1891. Crystalline rocks of Missouri, 

 Haworth. 



Silioified glass breccia, Sudbury 

 district, Williams, G. H. 



Basanite from Indiana, Gold- 

 smith. 



Piedmont plateau, Maryland, 

 Williams, G. H. ; Keyes. 



Mesozoic igneous rocks of Vir- 

 ginia, Campbell and Brown. 



Distribution of titanic oxide [in 

 soils], Dunnington. 



Metamofphism in conglomerate 

 schist, Wolff. 



Rifting in granite [Cape Ann], 

 Tarr. 



Post-Archean age of white lime- 

 stones of New Jersey, Nason. 



Nepheline-bearing rocks in Bra- 

 zil, Derby. 



Magnetite districts in Brazil, 

 Derby. 

 Petros. On certain rocks supposed to 

 move without any apparent cause. 

 Am. Jour. Sci., vol. 5, pp. 34^37, plate, 1822. 



Pettit, William. Remarks concerning 

 the copper district of Lake Superior. 

 Franklin lust., Jour., 3d series, vol. 13, pp. 

 338-345, map, 1847. 



Phillips, J. Arthur. Notes on the chem- 

 ical geology of the gold fields of Cali- 

 fornia. 



Abstract, Am. Jour. Sol., 2d series, vol. 4^ 

 pp-134^139il869. 

 From Proc. Eoyal Soc., vol. 16, p. 294. 



The alkaline and boracic lakes of 



California. 



Kansas City Eeview, vol. 1, pp. 225-235, 1878. 

 From Popular Sol. Eeview, 1878. 



Phillips, J. V. The geology of the Upper 

 Mississippi ; lead region. 



Mining Mag., vol. 2, pp. 129-138, New York, 

 1854. [Net seen.] 



Report on the geology of the min- 

 eral' districts, contiguous to the Iron 

 Mountain Railroad [has a geologic 

 map], St; Louis, 1859. [Not seen.] 



Geology of the West. 



Kansas City Eeview, vol. 1, pp. 488-491, 1878. 

 Sci. Atn. Snpp., vol. 4 fNo. 90), p. 1432, 1877. 

 From St. Louis Eepublican, 1877. 



Phillips, William. Essay on the Georgia 

 gold mines. 



Am. Jour. Sci., vol. 24, pp. 1-18, 1833. 



