THE DEPTH AND MARINE DEPOSITS OF THE PACIFIC OCEAN. 87 



Siliceous Organisms (5 per cent), Eadiolaria, Sponge spicules, Diatoms, 

 arenaceous Foraminifera. 



Minerals (5 per cent), angular, mean diameter 0.1 mm., felspar, obsidian, 

 magnetite. 



Fine Washings (24.25 per cent), amorphous clayey matter, with minute 

 mineral particles and fragments of siliceous organisms. 



No. 17. Station 22, 14th September, 1899. 

 Lat. 8° 31' S. ; long. 139° 26' W. ; depth, 1939 fathoms. 



GLOBIGERINA OOZE : gray, granular, slightly coherent. 



Calcium carbonate : 70.9 per cent, pelagic and bottom-living Forami- 

 nifera, rhabdoliths, coccoliths, and other minute calcareous bodies (horse- 

 shoe shaped). 



Residue : 29.1 per cent, yellowish-brown, flocculent, clayey matter, with 

 black deposit of mineral particles : — 



Siliceous Organisms (3 per cent), Radiolaria, Diatoms, arenaceous Fora- 

 minifera, and Sponge spicules. 



Minerals (5 per cent), angular, mean diameter 0.08 ram., felspar (plagio- 

 clase), augite, obsidian, magnetite, hematite. 



Fine Washings (21.1 per cent), amorphous clayey matter, with Radio- 

 larian and Diatom fragments, and minute mineral particles. 



No. 18. Station 23, 14th September, 1899. 

 Lat. 8° 33' S. ; long. 139° 36' W. ; depth, 1802 fathoms. 



GLOBIGERINA OOZE : gray, granular, slightly coherent. 



Calcium carbonate : 69.5 per cent, pelagic and bottom-living Forami- 

 nifera, Echinoid spines, and small calcareous horseshoe-shaped bodies. 



Residue : 30.5 per cent, flocculent, brownish-yellow, clayey matter, with 

 large amount of black mineral matter : — 



Siliceous Organisms (2 per cent), Radiolaria, Diatoms, arenaceous 

 Foraminifera, Sponge spicules. 



Minerals (10 per cent), angular, mean diameter 0.1 mm., augite, olivine, 

 magnetite, felspar (plagioclase, mostly kaolinized), chloritic minerals, man- 

 ganese grains, palagonite. 



Fine Washings (18.5 per cent), amorphous clayey matter, with minute 

 mineral particles and fragments of siliceous organisms. 



