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MUSEUM OF COMPARATIVE ZOOLOGY. 



151 



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Miuing Mag., New York, 



perry, John B. 



See Chades T. Jackyon. 



Phillips, J. V. 



The Geology of ilic Upper Mississippi Lead Region. 

 1854, ii. 129-138. 



Piggot, A. Snowden. 



Oil Copper and Copper Mining. Philadelphia, 1858, 388 pp.; Mining Mag., 

 1858, X. 121-142, entitled History of the Co^jpcr Region of Lake Supe- 

 rior. 



Porter, George F. , 



Report on tlie Copper Rock. George P. Porter in Thomas L. McKenney's 

 Tour to the Lakes, Baltimore, 1827, pp. 477, 478. 



^ 



Posselt, C. 



Die Kupfer-Disfcrikte des Obersee's, Lake Superior. Lconhard's Jahrbucli, 

 185G, pp. 1-10. 



Preston, Samuel. 



Copper Ore on Lake Superior. Niles's Weekly Register, 183D, (3,) xii. 203, 



Pumpelly, Raphael. 



The Paragenesis and Derivation of Copper and its Associates on Lake Supe- 

 rior. Am. Jour. Sei., 1872, (3,) iii. 188 - 198, 243-258, 347-353 ; Leon- 

 liard's Jahrbueh, 1872, pp. 538-540; Geol. of Michigan, Part II., 1873. 

 On Pscudomor])hs of Chlorite after Garnet at Spurr Mountain Iron Mine. 



. Am. Jour. Sci., 1875, (3,) x. 17-21. 

 Metasomatie Development of tlie Copper-bearing Rocks of Lake Superior. 



Proe. Am. Acad., 1878, xiii. 253-309. 

 See T. B. Brooks and T. C. Chamberlain. 



Rath, Gustav vom. 



Uebcr KalkspatU vom Oberen See. Pogg. Ann., 18G7, cxxxii. 387-404; 

 Leonliard's Jahrbucli, 18G8, pp. 347, 348. 



Rawson, A. L,. 



Pictured Rocks of Lake Superior. Harper's New Monthly Mag., 1SG7, 

 xxxiv. 681. 



Relfe, James H, 



Sale of Mineral Lands. Reports of Committees, 1845~4G, 1st Ses5. 29th 

 Cong., iii.. No. 591, 51 pp. with map. Contains part of Douglass 

 Houghton's Fourth Report, and some Analyses by Charlea T. Jack&ou.' 

 Richardson, John. 



On some Points of the Physical Geography of North America in Conncctiou 

 with its Geological Structure. Quart. Jour. Geol. Soc., 18131, vii. 212- 

 215. 



Rivot, L. E. 



Mcmoirc sur Ic Giscment du Cuivre Natif au Lac Suporleur. Coraiptea- Ren- 



dus, 1855, xl. 1306-1309, 

 Voyage au Lac Supericur. Annalcs dcs Mines, 1S55, (5,) vii. 173-^^8; 



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