1-52- BULLETIN OF THE 



Mining Mag., lS5f), (1,) vi. 28-37, 99-lOG, 207-213, 414-418; vii. 

 249 - 255, 359 - 367 ; 1857, ix. GO - 65. 



Notice sur le Lac Superieur. Annales des Mines, 1856, (5,) x. 365 -474. 



Uber die Kupfercrz-Lagersfatteu am Obersee in den Nordamerikanisclicu 

 Freistaaten. Berg. u. Iliitteii. Zeit., 1856, pp. 261 - 263, 269 - 271, 293 - 

 295, 277-279, 314, 315, 317, 318, 325-328,333, 334, 341-343, 349- 

 351,357-359,365-367,381,382. 



Analysis of Lake Superior Iron Ore. Mining Mag., 1856, vii. 301. 

 Rogers, H. D. 



Mineralogy and Geology of Lake Superior. Proc. Bost. Soc. Nat. Hist., 

 1846, ii. 124, 125. 

 Rogers, William B. 



On the Origin of the Actual Outlines of Lake Superior. Proc. Am. Assoc. 

 Adv. Sci., 1848, i. 79, 80. 



Age of the Sandstone. Proc. Bost. Soc. Nat. Hist., 1860, vii. 394, 395. 

 Rolker, Charles M. 



The Allouez Mine and Ore Dressing, as practised in the Lake Superior Cop- 

 per District. Trans. Am. Inst. Min. Eng., 1877, v. 584-606. 

 Rominger, Charles. 



Observations on the Ontonagon Silver Mining District and the Slate Quarries 

 of Huron Bay. Geol. Surv. of Michigan, 1876, iii. 153 - 166. 



See T. B. Brooks, Geol. Surv. of Michigan, 1873, i., Part III. 

 Rottermund, Count de. 



Report on the Exploration of Lakes Superior and Huron. Canada Legisla- 

 tive Assembly, 1856, 24 pp. ; Canadian Jour., 1856, (2,) i. 446-452. 



Ruggles, D. 



Tides in the North American Lakes. Am. Jour. Sci., 1843, (1,) xlv. 



18-27. 

 Considerations respecting the Copper Mines of Lake Superior. Am. Jour. 

 Sci., 1845, (1,) xlix. 64-72. 

 Russell, John L. 



Wood from the Terraces of Lake Superior. Proc. Bost. Soc. Nat. Hist., 

 1850, iii. 273. 

 Sanders, George N. 



Mineral Lands of Lake Superior. Senate Docs., 2d Sess. 28th Cong., 1844 - 



45, vii., No. 117, pp. 3 - 9 ; xi.. No. 175, pp. 8 - 14. 

 See John Stockton. 

 Sauvage, E. 



Notice sur les Minerals de Per du Lac Superieur. Annales des Mines, 1875, 

 (7,) viii. 1-35. 

 Schoolcraft, Henry R. 



Narrative Journal of Travels through the Northwestern B.egions of the United 

 States, extending from Detroit through the Great Chain of American 

 Lakes to the Sources of the Mississippi River. Albany, 1821, 419 pp. 

 • ' with map. 



