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 Tikehau, 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, 25th September, 1899. 
Off Tikehau, five miles from last position; depth, 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 (Plewrotoma) and Lamelli- 
branchs, coccoliths, rhabdoliths, Tunicate spicules, Alcyonarian spicules, oto- 
liths; small broken Pileurotoma and some of the Coral fragments and 
Orbitohtes 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, 
Kchinoid spines, coccoliths, rhabdoliths, Tunicate spicules, otoliths of Fish, 
manganese grains, and small fragments of Coral coated with manganese. 
