EEPORT ON THE DEEP-SEA DEPOSITS. 
85 
Residue. 
Additional Observations. 
Siliceous Organisms. 
Minerals. 
Fine Washings. 
2 '00 %), Sponge spicules, one or 
two Radiolaiia, pale casts of 
Foramiuifera, Astrorliizid®. 
(lO'OO %), m. di. 0'12 mm., 
angular and rounded; quartz, 
felspar, hornblende, augite, 
magnetite, volcanic glass, 
glauconite. 
(39'85 %), amorphous matter, 
with minute fragments of 
minerals and siliceous organ- 
isms. 
This deposit is much like that obtained at Station 163 f, 
but there is considerably more amorphous clayey matter. 
2 '00 %), Sponge spicules, a 
few Radiolaria, casts of Fora- 
minifera, Astrorhizidse. 
(lO'OO %), m. di. 0'12 mm., 
angular ; quartz, monoclinic 
and triclinic felspars, augite, 
hornblende, mica, glassy 
volcanic fragments, magnetite, 
epidote, glauconite. 
(41 '41 %), fine greenish coloured 
amorphous matter, fragments 
of minerals, Radiolaria, and 
Diatoms. 
This deposit, except for the glauconite and other mineral 
particles, might be called a Globigerina Ooze. 
15'00 %), Radiolaria, many 
casts of Foramiuifera and 
other organisms, Astrorhizidae, 
Lituolidae, Diatoms. 
(25'00 %), m. di. 0'15 mm., 
angular; quartz, felspar, plag- 
ioclase, glauconite, horn- 
blende, augite, white or green 
mica, epidote, tourmaline, 
glassy volcanic fragments, 
magnetite. 
(9 '69 %), amorphous matter 
and fine mineral particles, 
with a green-brown substance 
often cementing the particles 
together. 
The trawl brought up a quantity of mud, some pumice, 
pebbles, and animals. Six pieces of pumice are 
rounded, and a rounded fine-grained fragment of sand- 
stone is 2 cm. in diameter. Glauconitic particles are 
numerous. 
I'OO %), a few Sponge spicules, 
Radiolaria, Lituolidae. 
(20'00 %), m. di. O'lO mm., 
angular ; quartz, felspar, 
hornblende, mica, magnetite, 
glas.sy volcanic fragments, 
pumice, grains of manganese. 
(72'46 %), amorphous matter, 
with minute mineral particles 
and some siliceous fragments. 
This deposit contains a great amount of amorphous 
matter ; the pelagic Foramiuifera are chiefly in a 
fragmentary condition. 
I'OO %), Radiolaria, a few 
Sponge spicules, Lituolidae. 
(I'OO %), ra. di. 0'08 mm., 
angular; quartz, felspar, horn- 
blende, mica, glassy volcanic 
fragments, magnetite, man- 
ganese grains, zircon, glau- 
conite. 
(78 '87 %), amorphous matter, 
with many minute fragments 
of minerals and some frag- 
ments of siliceous organisms. 
Among the minerals there are many small rounded par- 
ticles of quartz the same as at Station 160, probably 
wind-borne. Most of the pelagic Foraminifera are frag- 
mentary, as at Station 165. 
I'OO %), Radiolaria, Sponge 
spicules, Lituolidae, Diatoms. 
(I'OO %), m. di. 0'06 mm., 
angular; fragments of pumice, 
felspar, magnetite, augite. 
(21 '41 %), amorphous matter, 
with minute fragments of 
minerals, Radiolaria, and 
Diatoms. 
This deposit contains a con.siderable quantity of fine 
amorphous calcareous matter, and relatively little 
clayey matter. Note the increase of carbonate of lime 
with decreasing depth. 
I'OO %), Radiolaria, Lituolidae, 
one or two imperfect white 
casts of Foramiuifera, a few 
Diatoms. 
(I'OO %), m. di. 0'06 mm., 
angular; pumice, augite, fel- 
spar, plagioclase, green mica, 
magnetite, quartz. 
(13'11%), amorphous matter and 
small fragments of minerals 
and siliceous organisms. 
The quartz particles are few in number, small, rounded, 
ami wind-borne. The volcanic mineral particles have 
often a vitreous coating. The small lapilli are basaltic, 
much altered, and filled with delessite ; some are vesi- 
cular, others quite massive. 
lituolidae. 
A small quantity of the deposit which came up in the 
somuling tube indicated a Globigerina Ooze, and con- 
tained the organisms mentioned. The trawl brought 
up a small quantity of the deposit, with the finer parts 
washed away, from which the analysis was made. 
5 '00 %), white and pale green 
casts of the Foramiuifera, 
Iiituolidae, a few Radiolaria, 
one or two Diatoms. 
(I'OO %), m. di. 0'12 mm., 
angular ; pumice, felspar, 
plagioclase, augite, magnetite, 
glauconite, quartz, garpet, 
manganese grains. 
(13 '80%), amorphous matter and 
small fragments of minerals 
and siliceous organisms. 
These deposits are somewhat remarkable for the large 
number of Coccoliths and Coccosplieres thej' contain. 
The average diameter of the Coccoliths is 0'015 mm., 
and that of the Coccosplieres 0'025 mm. We estimate 
that these organisms and their broken parts make up 
from 15 to 20 per cent, of the deposit. The shallow 
depth and relative absence of land debris probably 
account in some measure for the abundance of these 
organisms in this place. Although the white and pale 
green casts of Foramiuifera are numerous, true glau- 
conitic particles are exceedingly rare. 
I 
i 
Olf Sydne)^ — continued, Sydney to New Zealand. 
