474 PROCEEDINGS OF THE NEW YORK MEETING 



One [1) vletv presented hi/ the United Stales National Museum {George P. Merrill) 



Size, 6 by 8J inclies 



18011. Polislied slab of Orl)iciilar granite in tlie collection of the United States Na- 

 tional Mnsenm. From Slattemosse, Sinaland, Sweden. Dimensions, 

 22 by 30 inches. 



Seven (7) views presented by J. F. Kemp . 

 Size, 5 by 7 inches 



1810 (1). Arch of Upper Silnriaa quartzite forming the " Rainbow," at Iron gate, 



near Clifton forge, Virginia. The arch is exposed in the valley of the 

 James river. Another stratum of quartzite forms a parallel arch higher 

 up, which does not appear, from lack of distance in taking the view. 

 J. F. K., 1898. 



1811 (2). Overthrown fold of Upper Silurian quartzite in Eagle mountain, in the 



valley of the James river, Virginia. J. F. K., 1898. 



1812 (3). One limb of fold of Upper Silurian quartzite forming Rathole mountain, 



just across the James river from number 2. J. F. K., 1898, 



1 813 (4). Iron ore mine based on the " gossan " of a pyrrhotite vein, Isabella mine, 



Ducktown, Tennessee. J. F. K., 1898. 



1814 (5). The Mary copper mine, based on a great vein of copper-bearing pyrrho- 



tite, at Ducktown, Tennessee. The vein outcrops in a marked pene. 

 plain of mica schists, which is surrounded by a rim of high hills. 

 J. F. K., 1898." 



1815 (6). Rocking stone in Bronx park, New York city. By timing the effort to 



the period of the stone a man can make the top of the stone describe 

 an arc of about 3 inches. J. F. K., 1898. 



1816 (7). Glacial farrows, Bronx park. New York city. The furrows are not far 



from the rocking stone, but they have no connection with it. They 

 strike in a northwesterly direction across the foliation of the gneisses. 

 J. F. K., 1898. 



FiftU'Cight {58) views presented by Geological Survey of Iowa 

 Size, 4J by 7J inches 



1817 (1). South of Cedar river, Linn county, Iowa. Ultimate ramification of den- 



dritic drainage on loess mantle of Kansan drift slieet. Cedar Rapids 

 sheet, topographical atlas. United States Geological Survey. 



1818 (2). Topography of Kansan drift sheet, showing slopes of larger ravines. 



South of Cedar river, Linn county, Iowa. Cedar Rapids sheet, topo- 

 graphical atlas. United States Geological Survey. 



1819 (3). Topography of Kansan drift sheet loess-mantled spatulate gullies. South 



of London, Cedar county, Iowa. 



1820 (4). On Walnut ci'eek, Scott county, Iowa. In Kansan drift sheet with loess 



mantle. Iowa Geological Survey, volume ix. 



