674 J. A. UDDEN COMPOSITION OF CLASTIC SEDIMENTS 



List of Samples in TaMe 18 



165. Gray sand with black specks, some magnetic material, from the Bering 



Sea, 200 miles from land. Steamer Trenton; Station No. 3559; lati- 

 tude 56° 56' 0" north, longitude 169° 52' 0" west; depth, 39 fathoms. 

 September 3, 1893. 



166. Black, mainly quartz, sand, 20 miles from Kadiak Island. Steamer 



Albatross; Station No. 2854; latitude 56° 55' 0" north, longitude 153° 

 4' 0" west ; depth, 60 fathoms. August 10, 1888. 



167. Fine gray sand containing only a trace of organic material. Sample 



taken 300 miles south of Bering Strait and 30 miles southwest of 

 Nunivak Island. Steamer Trenton; Station No. 3515; latitude 59° 59' 

 0" north, longitude 167° 53' 0" west; depth, 13 fathoms. August 2, 

 1892. 



168. Fine gray sand containing much magnetite from 25 miles south of west 



end of Alaska Peninsula, on the continental shelf. Steamer Albatross; 

 Station No. 2847; latitude 55° 8' 0" north, longitude 160° 12' 0" west; 

 ■ depth, 48 fathoms. July 31, 1888. 



169. Green mud, fine sand, with much magnetite, from 80 miles east of Pribilof 



Islands, Bering Sea. Steamer Trenton; Station No. 3490; latitude 

 56° 47' 0" north, longitude 173° 14' *0" west ; depth, 78 fathoms. July 

 13, 1893. 



170. Green mud, fine sand. Sand one-half dark colored, mostly quartz. From 



15 miles southeast of Pribilof Islands. Steamer Trenton; Station No. 

 3492; latitude 56° 32' 0" north, longitude 171° 50' 0" west; depth, 70 

 fathoms. July 14, 1893. 



171. Green mud and some magnetite grains from 150 miles from land. Steamer 



Trenton; Station No. 3539; latitude 56° 34' 0" north, longitude 167° 

 19' 0" west ; depth, 57 fathoms. August 8, 1893. 



172. Green mud and sand with some few magnetite grains, mostly quartz 



grains, from 100 miles north of Alaska Peninsula, Bering Strait. 



173. Fine sand and green mud containing quartz grains with some magnetite 



from 900 miles from land, in Bering Sea. Steamer Trenton; Station 

 No. 3513; latitude 58° 27' 0" north, longitude 169° 8' 0" west; depth, 

 35 fathoms. August 1, 1893. 



174. Green .mud, taken 20 miles south of Kadiak Island, south of Alaska. 



Steamer Trenton; Station No. 2855 ; latitude 57° 0' 0" north, longitude 

 153° 18' 0" west ; depth, 69 fathoms. August 10, 1888. 



175. Black sand containing some magnetic material from 5 to 10 miles north 



of large island west of Isonotski Straits. Steamer Trenton; Station 

 No. 3265; latitude 55° 16' 30" north, longitude 163° 52' 45" west; 

 depth, 38 fathoms. June 25, 1890. 



Deposits in the sea near volcanoes. — Six samples were taken in the 

 sea at' points not far distant from volcanoes. These resemble other de- 

 posits in the deeper sea, with the exception that they contain some 

 coarse material that consists of scoriae of local volcanic origin. This 

 makes secondary maxima in three of the analyses and retards the dim- 



