The United States National Museum 349 



" 12. The Tenth Census collection of Iron Ores, compris- 

 ing some two thousand two hundred hand specimens and five 

 hundred and six thin sections. This formed the basis of Pro- 

 fessor Raphael Pumpelly's report. 1 



" 13. The collection illustrating Kirkaldy's experimental 

 inquiry into the mechanical properties of Fagersta steel. 



" 14. Collections from the Archaean Division of the United 

 States Geological Survey made in Vermont and Massachu- 

 setts, and forming the basis of the petrographic work to be 

 published in a forthcoming monograph. 2 



"Among the materials of greatest historical importance 

 may be mentioned : 



" (a.) A mass of iron smelted by members of the Frobisher 

 expedition during their stay at Frobisher Bay in 1578. 



" (b.) A piece of metallic tin smelted by Doctor T. C. Jack- 

 son in 1840 from ore found at Jackson, Carroll County, New 

 Hampshire, and believed to have been the first tin smelted in 

 America. 



" (c.) The first steel car axle made in America and bent 

 cold. 



" (d.} Copper medal. Struck from the first copper pro- 

 duced in Colorado in 1866. 



" (tf.) Placer gold. First gold discovered in California, 

 from tail-race two hundred yards below the mill, panned 

 by J. W. Marshall on the evening of the iQth and 2Oth of 

 January, 1848. Marshall's Claim, Sutter's Mill, Coloma, 

 El Dorado County, California. 



" (yC) Sample of petroleum from the first flowing well in 

 the United States. Drilled in 1829 near Burkesville, Ken- 

 tucky. 



"Among the more striking collections of the exhibition 

 series may be mentioned the one illustrating limestone cav- 

 erns and associated phenomena. This includes not only a 

 large and variegated series of stalagmitic and stalactitic min- 



1 Report on the Mining Industries of the United States, with special investigations into 



the iron resources of the Republic, and into the cretaceous coals of the 

 Northwest. Volume xv., Washington, 1886. 



2 See also Thirteenth and Fourteenth Annual Reports of the United States Geological Survey. 



23* 



