THE DEPTH AND MARINE DEPOSITS OF THE PACIFIC OCEAN. 89 



Residue : 96.5 per cent, black : — 



Siliceous Organisms (1 per cent), Radiolaria. 



Minerals (5 per cent), angular and rounded, mean diameter 0.1 mm., 

 consisting largely of manganese grains, rounded balls of phillipsite, felspar, 

 and glass. 



Fine Wasliings (90.5 per cent), amorphous clayey matter, with minute 

 manganese grains and phillipsite crystals. 



No. 22. Station 35, 21st September, 1899. 

 Lat. 14° 42' S. ; long. 147° 08' W. ; depth, 1462 fathoms. 



GLOBIGERINA OOZE : dirty cream colored, granular, incoherent. 



Calcium carbonate : 74 per cent, pelagic and bottom-living Forami- 

 nifera, coccoliths, rhabdoliths, and other small calcareous horseshoe-shaped 

 bodies. 



Residue : 26 per cent, reddish-yellow, flocculent, very little heavy 

 matter : — 



Siliceous Organisms (1 per cent). Sponge spicules, Radiolaria. 



Minerals {\ per cent), a few angular fragments, mean diameter 0.08 mm., 

 felspar, and glass. 



Fine Washings (24 per cent), amorphous clayey matter, with minute 

 mineral fragments, etc. 



No. 23. Station 40, 24th September, 1899. 

 Avatoru Passage, Paumotu Islands; depth, 661 fathoms. 



PTEROPOD OOZE : cream color, coherent. 



Calcium carbonate : 77.3 per cent, Pteropods, Heteropods, pelagic and 

 bottom-living Foraminifera, Echinoid spines, coccoliths, rhabdoliths. Tuni- 

 cate spicules, otoliths of Fish, MoUuscan shell-fragments, small Lamelli- 

 branchs, and small calcareous horseshoe-shaped bodies. 

 Residue : 22.7 per cent, brown, flocculent : — 



Siliceous Organisms (1 per cent), Sponge spicules, Radiolaria, arenaceous 

 Foraminifera. 



Minerals (1 per cent), angular, mean diameter 0.06 mm., one or two 

 glassy particles and felspar. There is very little mineral matter, considerably 

 less than 1 per cent. 



Fine Washings (20.7 per cent), amorphous clayey matter, with very 

 small mineral particles, etc. 



