THE DEPTH AND MARINE DEPOSITS OF THE PACIFIC OCEAN. 65 
No. 41. Station 4523,* 12th January, 1905. 
Lat. 3° 34’ S.; long. 95° 35.4’ W.; depth, 2031 fathoms. 
GLOBIGERINA OOZE: white, with brownish spots, slightly plastic when 
wet; chalky and slightly coherent when dried. 
CALCIUM CARBONATE: 55.90 per cent, pelagic Foraminifera, including 
many young individuals, a few bottom-living forms (Rotalide, Uvigerina), 
and small Echinoid spines, 
Residue: 44.10 per cent : — 
Siliceous Organisms (0.5 per cent — the actual percentage is much 
higher, as many broken particles pass off with the “ fine washings”), mostly 
well-preserved Radiolaria belonging to different species, with a few Sponge 
spicules, Diatoms, and arenaceous Foraminifera. 
Minerals (traces); all that can be observed in the sample available for 
examination are a few insignificant particles of some reddish product of 
decomposition. 
Fine Washings (43.60 per cent), light-gray flocculent matter, almost 
entirely formed of the remnants of siliceous organisms; there is very little 
actual clay, and the few mineral particles present are too small to be 
identified. 
No. 42. Station 4717, 13th January, 19085. 
Lat. 5° 10’ S.; long. 98° 56’ W.; depth, 2153 fathoms. 
Besides the sample from the sounding tube used for the following 
description, there is a fairly large quantity of material, which had apparently 
been trawled and subjected to a certain amount of washing; it is dark gray 
in color, yellowish on the top, and emits a faint smell of hydrogen sulphide, 
very pronounced on treatment with hydrochloric acid. Although this gray 
ooze fills many of the broken shells there are no actual casts. 
GLOBIGERINA OOZE: light red-brown, plastic, with many Foraminifera 
visible to the naked eye; when dried slightly coherent, the lumps break- 
ing easily. 
CaLciuM CARBONATE: 60.30 per cent; mostly pelagic Foraminifera, with 
a few bottom-living forms, Echinoid spines, teeth of Fish, and coccoliths. 
ResipuE: 39.70 per cent :— 
Siliceous Organisms (about 0.1 per cent), principally Radiolaria, arena- 
ceous Foraminifera, and Diatoms, with a few Sponge spicules. 
Minerals (traces), angular; mean diameter a little over 0.01 mm.; the 
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