THE DEPTH AND MARINE DEPOSITS OF THE PACIFIC OCEAN. 107 



Siliceous Organisms (8 per cent), Radiolaria, Sponge spicules. 



Minerals (3 per cent), angular, mean diameter 0.08 mm., volcanic glass, 

 plagioclase, augite, magnetite, fragment of decomposed pumice 3 mm. in 

 length, chloritic mineral. 



Fine Washings (15.85 per cent), amorphous clayey matter, with minute 

 mineral particles and fragments of siliceous organisms. 



No. 70. Station 237, 29th January, 1900. 

 Lat. 6° 11' N. ; long. 170° 25' E. ; depth, 2486 fathoms. 



GLOBIGERINA OOZE : brownish gray, coherent, plastic. 



Calcium carbokate : 69.35 per cent, pelagic and bottom-living Forami- 

 nifera, Echinoid spines, otoliths, Ostracodes, coccoliths, rhabdoliths. 

 Residue : 30.65 per cent, brown, flocculent : — 



Siliceous Organisms (5 per cent), Radiolaria, Sponge spicules. 

 Minerals (1 per cent), angular, mean diameter 0.07 mm., volcanic glass, 

 pumice, felspar (?), augite, magnetite. 



Fine Washings (24.65 per cent), amorphous clayey matter, with minute 

 mineral particles and fragments of siliceous organisms. 



No. 71. Station 238, 5th February, 1900. 

 Lat. 5° 48' N. ; long. 169° 1' E. ; depth, 2424 fathoms. 



GLOBIGERINA OOZE : gray, coherent, plastic. 



Calcium carbonate : 74.7 per cent, pelagic and bottom-living Forami- 

 nifera, Echinoid spines, otoliths, Ostracodes, coccoliths, rhabdoliths. 

 Residue : 25.3 per cent, brown, flocculent : — 



Siliceous Organisms (4 per cent), Radiolaria, Sponge spicules. 

 Minerals (1 per cent), angular, mean diameter 0.07 mm., volcanic glass 

 and felspar. 



Fine Washings (20.3 per cent), amorphous clayey matter, with minute 

 mineral particles and fragments of siliceous organisms. 



No. 72. Station 240, 13th February, 1900. 

 Lat. 6° 49' N. ; long. 156° 36' E. ; depth, 2475 fathoms. 



GLOBIGERINA OOZE : brown, plastic, coherent. 



Calcium carbonate : 62.9 per cent (the mean of two analyses which 

 gave respectively 65.9 and 60 per cent), pelagic and bottom-living For- 

 aminifera (nearly all of which are fragmentary), otoliths, Ostracodes, Echi- 

 noid spines, coccoliths, rhabdoliths. 



