142 BULLETIN OF THE 



Oil the Origin and Stratigraphical "Relations of the Trappean Rocks of Lake 

 Superior. Ann. Sci. Discov., 1861, 285. 

 Frazer, Persifor, Jr. 



The Lake Superior Copper Rocks in Pennsylvania. Trans. Am. Inst. Min. 

 Eug., 1879, vii. 336-339. 

 Fullerton, T. M. 



St. Louis River. Minn. Hist. Coll., 1850 - 56, i. 139 - 143. 

 Geinitz, H. B. 



Alexander "VViucliell : iiber geologische Verhaltnisse in Michigan. Leonhard's 

 Jahrbuch, 1876, pp. 438 - 440. 

 Genth, Frederick A. 



Contributions to Mineralogy. Am. Jour. Sci., 1859, (2,) xxvii. 400 ; xxviii. 

 246-255; 1862, xxxiii. 190-206. 

 Gray, A. B. 



Report of A. B. Gray on Mineral Lands of Lake Superior. Executive Docs., 



1st Sess. 29th Cong., 1845-46, vii., No. 211, 23 pp., with map. 

 See John Stockton. 

 Greeley, Horace. 



Process of Working a Lake Superior Copper Mine. Hunt's Merch. Mag., 

 1848, xix. 559, 560. 

 Hager, A. D. 



Ancient Mining on the Shores of Lake Superior. Atlantic Monthly, 1865, 

 XV. 308-315. 

 Hall, C. W. 



See S. E. Peckham and N. H. Wiuchell. 



Hall, James. 



On the Silurian System of the Lake Superior Region. Am. Jour. Sci., 1854, 



(2,)xvii. 181-194. 

 On the Potsdam Sandstone. Sixteenth Ann. Rep. of the Regents of the 



Univ. of New York. Appendix D. Albany, 1863, pp. 210 - 220. 

 See Foster and Whitney. 

 Hanchett, Augustus H. 



* Report on the Geology of Minnesota. 1864, 82 pp. 



Hayes, A. A. 



Datolite from Lake Superior. Proc. Bost. Soc. Nat Hist., 1859, vii. 348, 

 349, 354; 18G2, viii. 62-64. 

 Hector, James. 



On the Geology of the Country between Lake Superior and the Pacific Ocean, 



etc. Quart. Jour. Geol. Soc, 1861, xvii. 388-445. 

 See John Palliser. 

 Henwood, William J. 



On the Native Copper of Lake Superior. On MetaUiferous Deposits and 

 Subterranean Temperature. Part. I, pp. 385 - 489 ; Trans. Geol. Soc. of 

 Cornwall, vol. viii., Part I., 1871, pp. 385 - 489. 



