62 THE DEPTH AND MARINE DEPOSITS OF THE PACIFIC OCEAN. 
hydrochloric acid, the insoluble portion turning white, and manganese and 
iron passing into solution. 
Siliceous Organisms (traces), spherical Radiolaria, Sponge spicules, and 
different species of arenaceous Foraminifera, all equally represented, and 
more abundant than the mineral particles. 
Minerals (hardly any —the washing of 30 grams of substance amounts 
to no more than one or two centigrams). The very few particles are angular, 
and have a mean diameter of 0.15 mm.; plagioclase, manganese grains, and 
hematite were observed. 
Fine Washings (21.90 per cent), brown flocculent clay, with manganese 
grains, and fragments of siliceous organisms. 
No. 35, Station 4711, 31st December, 1904. 
Lat. 7° 47.5'S.; long. 94°5.5'W.; depth, 2240 fathoms. 
GLOBIGERINA OOZE: brown, earthy, with little plasticity, containing 
Foraminifera visible to the naked eye. 
CaLtrum caRBoNnATE : 54,54 per cent, principally pelagic Foraminifera, 
with a few bottom-living forms, and Fishes’ teeth. 
Restpue: 45.46 per cent, rich brown : — 
Sihiecous Organisms (traces), mostly Radiolaria, with a few Sponge spic- 
ules and arenaceous Foraminifera. Though Radiolaria, as individuals, are 
numerous, they would, if estimated by weight, amount to a very small frac- 
tion of 1 per cent. 
Minerals (traces), manganese grains of various sizes (up to 2 mm. in 
diameter), and small angular fragments of felspar, were observed. 
Fine Washings (45.46 per cent), brown flocculent clay, with many frag- 
ments of siliceous organisms, and a few mineral particles’ too small to be 
identified, except manganese grains. 
No. 36. Station 4713, 1st January, 1905. 
Lat. 5° 35.3'S.; long. 92° 21.6’ W.; depth, 2191 fathoms. 
GLOBIGERINA OOZE: according to the preliminary report there was a 
light-brown ooze at the top of the cylinder, and a light-gray ooze below, but 
only a small quantity of the two layers mixed was received; the ooze is 
somewhat plastic when wet, incoherent when dry. 
Cactum carponate: 54.54 per cent, many pelagic Foraminifera and a 
few Echinoid spines. 
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