114 THE DEPTH AND MARINE DEPOSITS OF THE PACIFIC OCEAN. 



nifera, Echinoid spines, small Gasteropods {Pleurotoma) and Lamellibranchs, 

 Alcyonarian spicules, Tunicate spicules; very little mineral matter. 



Station 53, 25th September, 1899. 

 Off Tikeliau, two miles from last position ; depth, 782 fathoms. 



PTEROPOD OOZE : very little fine material ; incoherent, white, granular ; 

 Pteropods, Heteropods, pelagic and bottom-living Foraminifera, Echinoid 

 spines, Polyzoa, Coral fragments, coccoliths, rhabdoliths, Tunicate spicules. 

 Mollusc shells, arenaceous Foraminifera; a few angular mineral particles, 

 mean diametar 0.06 mm., felspar and obsidian; manganese is represented 

 by one or two grains, and it fills the foramina of some of the Forami- 

 nifera shells, while a small fragment of Polyzoon was coated with it. 



Station 54, 25th September, 1899. 

 Off Tikehau, three miles from last position ; depth, 850 fathoms. 



PTEROPOD OOZE : a little material, which has apparently been washed, 

 incoherent, gray, granular ; contains many Pteropods, with Heteropods, 

 pelagic and bottom-living Foraminifera, Coral fragments, small Lamelli- 

 branchs and Gasteropods {Pleurotoma), Tunicate spicules, coccoliths, rhabdo- 

 liths, Echinoid spines, otoliths, Alcyonarian spicules. 



Station 55, 25 th September, 1899. 

 Off Tikehau, five miles from last position ; deptli, 844 fathoms. 



PTEROPOD OOZE : incoherent, granular, gray in color ; hardly any fine 

 material ; Pteropods, Heteropods, pelagic and bottom-living Foraminifera, 

 Echinoid spines. Coral fragments, small Gasteropods [Plairotoma) and Lamelli- 

 branchs, coccoliths, rhabdoliths. Tunicate spicules, Alcyonarian spicules, oto- 

 liths; small broken Pleurotoma and some of the Coral fragments and 

 Orhitolites coated with manganese, and one or two grains of manganese were 

 observed ; but no other minerals or siliceous organisms were seen. 



Station 56, 25th September, 1899. 

 Lat. 14° 56' S. ; long. 148° 44' W. ; depth, 711 fathoms. 



PTEROPOD OOZE : white, granular, incoherent ; hardly any fine material, 

 only a few Pteropods, Heteropods, pelagic and bottom-living Foraminifera, 

 Echinoid spines, coccoliths, rhabdoliths, Tunicate spicules, otoliths of Fish, 

 manganese grains, and small fragments of Coral coated with manganese. 



