142 



BULLETIN OF THE 



On the Origin and Stratlgrnpklcal Kelations of the Trappcan Eocks of Lake 

 Superior. Ann. Sci. Diycov., 1801, 285. 



Frazer, Persifor, Jr. . . 



The Lake Superior Copper Rocks in Pennsylvania, Trans. Am. Inst. Miu. 



Eng., 1870, vii. 336-339. 



FuUerton, T. M. 



St. Louis Hiver. Minn. Hist. Coll., 1850 - 56, i. 139 - 14-3. 



Geinitz, H. B. 



Alexander Winehell : iibcr geologischc Verhaltnisse in Michigan. Leonhard's 



Jahrbuch, 1876, pp. 438 - 440. 



Genth, Frederick A. 



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



24G-255; 1862, xxxiii. 190-206. 



Gray, A. B. . 



Keport 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. F. Peekham and N. H. Winehell. 



Hall, Jannes. .... * t c • iok^ 



On the Silurian System of the Lake Superior Tiegion. Am. Jour, bci., 1854, 



(2,) xvii. 181-194. 

 On the Potsdam Sandstone. Sixteenth Ann. Hep. of the Kcgcnts of the 



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

 Bee Poster arid Whitney. 



Hanchett, Augustus H. 



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



Datolite' from Lake Superior. Proc. Post. Soe. Nat Hist., 1859, vii. 348, 

 349,354; 1862, viii. 62 -64. 



Hector, James. ^ i .i t> -p rv 



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



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



See John Palliser. 



Henwood, William J. t^ -i j 



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



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

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



