THE DEPTH AND MARINE DEPOSITS OF THE PACIFIC OCEAN. 113 



narian spicules, small Bivalves and Gasteropods, pelagic and bottom-living 

 Foraminifera, coccoliths, rhabdoliths, Tunicate spicules ; some of the Forami- 

 nifera are coated with manganese. 



Station 48, 24th September, 1899. 

 Between Rangiroa and Tikehau, Paumotu Islands ; depth, 897 fathoms. 



PTEROPOD OOZE : cream colored with very slight tinge of pink, inco- 

 herent ; has the appearance of having been slightly washed ; Pteropods, 

 Heteropods, pelagic and bottom-living Foraminifera, Echinoid spines, Coral 

 fragments, fragments of Molluscs, with small Gasteropods and Lamelli- 

 branchs, Ostracodes, otoliths, coccoliths, rhabdoliths. Tunicate spicules ; small 

 siliceous Sponge spicules, Radiolaria ; angular mineral particles, 0.07 mm. 

 in mean diameter, felspar, volcanic glass, manganese grains, and small 



cinders. 



Station 49, 24th September, 1899. 



Lat. 15° 25' S. ; long. 148° 8' W. ; depth, 1123 fathoms. 



GLOBIGERINA OOZE : cream colored, very little material ; appears 

 washed ; consisting of pelagic and bottom-living Foraminifera, otoliths, 

 coccoliths, rhabdoliths. Tunicate spicules, Pteropods, Echinoid spines. Sponge 

 spicules ; only a very few mineral particles were observed. 



Station 50, 25th September, 1899. 

 Lat. 15° 25.5' S. ; long. 148° 24.4' W. ; depth, 1486 fathoms. 



GLOBIGERINA OOZE : cream colored, granular ; appears washed ; pela- 

 gic and bottom-living Foraminifera, Echinoid spines, coccoliths, rhabdoliths. 

 Tunicate spicules, arenaceous Foraminifera, Radiolaria, Sponge spicules; 

 no mineral particles observed over 0.04 mm. in diameter. 



Station 51, 25th September, 1899. 

 Lat. 15° 2' S. ; long. 148° 24' W. ; depth, 488 fathoms. 



There is so little material from this station that it is impossible to say of 

 •what the deposit consists in situ; only one or two calcareous particles were 

 observed. 



Station 52, 25th September, 1899. 

 Lat. 15° 1.4' S. ; long. 148° 25' W. ; depth, 670 fathoms. 



CORAL SAND : very little material ; gray, incoherent ; consisting of 

 broken Corals, Pteropods, Heteropods, pelagic and bottom-living Forami- 



