82 THE DEPTH AND MARINE DEPOSITS OF THE PACIFIC OCEAN. 



No. 2. Station 4, 29th August, 1899. 

 Lat. 24° 45' N. ; long. 130° 16' W. ; depth, 2628 fathoms. 



EED CLAY: brown. 



Calcium carbonate : 2.05 per cent, only a few small Fishes' teeth 

 observed. 



Residue : 97.95 per cent, brown : — 



Siliceous Organisms (1 per cent), Sponge spicules. 

 Minerals (1 per cent), mean diameter 0.06 mm., angular, felspar, decom- 

 posed ferro-magnesian minerals, one or two crystals of pliillipsite, magnetite. 

 Fine Washings (95.95 per cent), amorphous clayey matter, with minute 

 minerals, etc. 



No. 3. Station 5, 30th August, 1899. 

 Lat. 22° 42' N. ; long. 131° 54' W. ; depth, 2740 fathoms. 



RED CLAY: brown. 



Calcium carbonate : 1 per cent, only a few Fish teeth observed. 

 Residue : 99 per cent, brown : — 



Siliceous Organisms (2 per cent), Radiolaria, Sponge spicules, arenaceous 

 Foraminifera. 



Minerals (1 per cent), mean diameter 0.08 mm., angular, felspar, glassy 

 particles, magnetite, and manganese grains. 



Fine Washings (96 per cent), amorphous clayey matter, minute min- 

 erals, etc. 



No. 4. Station 6, 31st August, 1899. 

 Lat. 20° 26' N. ; long. 133° 28' W. ; depth, 2810 fathoms. 



RED CLAY: brown. 



Calcium carbonate : 1 per cent, a few teeth of Fishes. 

 Residue : 99 per cent, brown : — 



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

 Foraminifera. 



Minerals (1 per cent), mostly angular, mean diameter 0.12 mm. (one 

 grain of felspar 0.8 mm. in diameter observed), felspar (orthoclase), glassy 

 particles, augite, magnetite, manganese grains. 



Fine Washings (97 per cent), amorphous clayey matter, with minute 

 mineral particles, etc. 



