92 THE DEPTH AND MARINE DEPOSITS OF THE PACIFIC OCEAN. 
No. 29. Station 68, 27th September, 1899. 
Lat. 16° 57’ S.; long. 148° 58’ W.; depth, 2224 fathoms. 
RED CLAY: grayish-brown, coherent, clayey. 
CALCIUM CARBONATE: 27.75 per cent, pelagic and bottom-living Forami- 
“nifeta, Fishes’ teeth, Ostracodes, Echinoid spines. 
Resipve: 72.25 per cent, brown, flocculent, with heavy mineral 
particles : — 
Siliceous Organisms (2 per cent), arenaceous Foraminifera, Radiolaria, 
Sponge spicules, Diatoms. 
Minerals (30 per cent), angular, mean diameter 0.1 mm., augite, olivine, 
magnetite, felspar (plagioclase), hematite, chloritic mineral, biotite (1 or 
2 flakes). 
Fine Washings {40.25 per cent), amorphous clayey matter, with minute 
mineral particles, etc. 
No. 30. Station 70, 27th September, 1899. 
Lat. 17° 21’ S.; long. 149° 15’ W.; depth, 1585 fathoms. 
VOLCANIC MUD: dark grayish-brown, coherent, clayey, slightly gritty 
to the touch. 
CALCIUM CARBONATE: 20.2 per cent, pelagic and bottom-living Forami- 
nifera, Kchinoid spines, Ostracodes, coccoliths, rhabdoliths. 
Resipure: 79.8 per cent, brown, flocculent, with a great many mineral 
particles : — 
Siliceous Organisms (2 per cent), arenaceous Foraminifera, Radiolaria, 
Sponge spicules. 
Minerals (50 per cent), angular, mean diameter 0.12 mm., olivine, 
augite, magnetite, hematite, chloritic mineral, felspar, volcanic glass. 
Fine Washings (27.8 per cent), amorphous clayey matter, with a large 
amount of minute mineral particles. 
No. 31. Station 74, 5th October, 1899. 
Lat. 17° 28.4’ S.; long. 149° 34’ W.; depth, 807 (?) fathoms. 
VOLCANIC MUD: grayish-black, coherent, clayey; on treatment with 
dilute hydrochloric acid a strong smell of sulphuretted hydrogen is given 
off, due to organic matter (portions of leaves, bark of trees, etc.). 
CaLcIuM CARBONATE: 30 per cent, pelagic and bottom-living Foraminifera, 
