146 BULLETIN OF THE 



Age of the Lake Superior Sajidstone. Proc. Bost. Soc. Nat. Hist., 1848, iii. 



76, 17; 1S50, p. 228; 18G0, vii. 396-398. 

 On Jacksonite. Proc. Bost, Soc. Nat. Hist., 1850, iii. 247, 248. 

 Former Level of Lake Superior. Proc. Bost. Soc. Nat. Hist., 1850, iii. 292. 

 Ou the Age of the Sandstones of the United States. Proc. Bost. Soc. Nat. 



Hist., 1850, iii. 335 - 339. 

 Analyses of Pitehstoue Porphyry from Isle Boyale, etc. Am. Jour. Sci., 



1851, (2,) xi. 401, 402 ; Proc. Bost. Soc. Nat. Hist., 1851, iv. 39, 40. 

 Rain-Drop and Air-Bubble Impressions. Proc. Bost. Soc. Nat. Hist., 1851, 



iv. 131, 132. 

 Geology, Mineralogy, and Topography of the Lands around Lake Superior. 



Senate Docs., 1851 - 52, 1st Sess. 32d Cong., xi. 232 - 244. In Andrews's 



Keport, 

 Igneous Origin of Calcite Veins. Proc. Bost. Soc. Nat. Hist., 1853, Feb. 17, 



iv. 308, 309. 

 Ueber den Metallfiihrenden Distrikt am Obern See im Staate Michigan. 



Karsten's Archiv., 1853, xxv. 656-667. 

 Catalogue of Rocks, Minerals, and Ores collected during the years 1847 and 



1848, ou the Geological Survey of the United States Mineral Lands in 



Michigan. Collected by Charles T. Jackson. Smithsonian Report, 1854, 



pp. 338-367. 

 Observations sur quelques Mines des Etats-Unis et sur le Gres Rouge du 



Lac Superieur. Comptes Rendus, 1854, xxxix. 803- 807. 

 Trap Dikes. Proc. Bost. Soc. Nat. Hist., 1856, vi. 23, 24. 

 On the Ash-bed and the Origin of the Copper. Proc. Bost. Soc. Nat. Hist., 



1855, V. 280, 281; 1859, vii. 31. 

 Thermal Waters. Proc. Bost. Soc. Nat. Hist., 1859, vii. 45 - 47. 

 Domeykite from Lake Superior. Proc. Bost. Soc. Nat. Hist., 1861, viii. 258. 

 Sur les Mines de Cuivre du Lac Supereur et sur un Nouveau Gisement 



d'Etain dans I'Etat du Maiue. Compes Rendus, 1869, Ixix. 1082, 1083. 

 See James H. Relfe. 

 Jackson, Charles T., and J. B. Perry. 



Glacial Origin of Lake Superior. Proc. Bost. Soc. Nat. Hist., 1870, xiv. 



73-75. 

 Jenney, F. B. 



See T. B. Brooks. 

 Julien, Alexis A. 



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

 Keating, William H. 



Narrative of an Expedition to the Source of St. Peter's River, etc., performed 



in the Year 1823. 2 vols. i. 458; ii. 248, andapp. 156. London, 1825. 

 Kimball, J. P. 



Ou the Iron Ores of Marquette, Mich. Am. Jour. Sci., 1865, (2,) xxix. 



290-303. 

 See J. W. Poster. 



