64 THE DEPTH AND MARINE DEPOSITS OF THE PACIFIC OCEAN. 
Minerals (0.10 per cent approximately), angular, ranging from under 
0.03 to 0.05 mm. in diameter; augite, plagioclase (probably labradorite), 
magnetite, brownish volcanic glass are the most abundant, with a few 
manganese grains and particles of some chloritic mineral, greenish and 
crypto-crystalline. 
Fine Washings (54.30 per cent), brown flocculent clay, with many frag- 
ments of siliceous organisms and minute mineral particles. 
No. 39. Station 4521,* 11th January, 1908. 
Lat. 2° 14.3’ 8.; long. 92° 29.9’ W.; depth, 1871 fathoms. 
GLOBIGERINA OOZE: gray and plastic when wet; white, chalky, and 
coherent when dried. 
CALCIUM CARBONATE: 45.01 per cent, principally pelagic Foraminifera, 
mostly broken shells, with many bottom-living forms (Ztotalia), and a few 
Echinoid spines belonging to young individuals. 
RestpuE: 54.99 per cent : — 
Siliceous Organisms (traces); Radiolaria are the most abundant, Sponge 
spicules and Diatoms being poorly represented. 
Minerals (very few), angular ; mean diameter under 0.02 mm.; augite, 
with a few manganese grains and flakes of hematite, can alone be identified ; 
the other particles are too small to be determined. 
Fine Washings (54.99 per cent), gray clay containing many fragments 
of siliceous organisms and minute mineral particles. 
No. 40. Station 4522,* 11th January, 19065. 
Lat. 2° 42.4’ S.; long. 93° 80’ W.; depth, 1924 fathoms. 
GLOBIGERINA OOZI': light gray, plastic and slightly sticky ; coherent 
with chalky appearance when dried. 
CALcIUM CARBONATE: 55.90 per cent, shells of pelagic and bottom-living 
Foraminifera, and their comminuted fragments, and KEchinoid spines. 
ResrpuE: 44.10 per cent : — 
Siliceous organisms (traces), Radiolaria, Diatoms, and Sponge spicules, 
Minerals (traces), angular; mean diameter 0.02 mm.; the most abun- 
dant is an olive-green, crypto-crystalline, chloritic mineral, with a few parti- 
cles of augite, and one or two manganese grains. 
Fine Washings (44.10 per cent), light-gray clay, slightly greenish, half 
its weight consisting of remains of siliceous organisms, with a few minute 
mineral particles. 
