EEPORT ON THE DEEP-SEA DEPOSITS. 
87 
Kesidue. 
Additional Observations. 
Siliceous Organisms. 
Alinerals. 
Fine Washings. 
(I'OO %), a few small fragments 
of Sponge spicules, Astror- 
bizid®, Lituolid®, a few pale 
and dark green casts. 
(2'00 %), m. di. 0'08 mm., 
angular and rounded; felspar, 
quartz, augite, magnetite, 
olivine, mica, many grains of 
glauconite. 
(70'29 %), amorphous matter, 
with many minute mineral 
particles. 
This deposit contains a great many glauconite grains, 
which are mostly irregular in form, but would appear 
to have been at one time perfect casts of Foraminifera 
and other organisms. In some cases the transition 
can be traced by microscopic examination. 
(2 "00 %), a few fragments of 
Sponge spicules and Diatoms. 
i 
1 
(60'00 %), m. di. 0'15 mm., 
angular and rounded; quartz, 
mica, magnetite, felspar, 
augite, many fragments of 
clastic rocks. 
(29'29 %), amorphous matter, 
many fine mineral particles, 
and a few fragments of 
siliceous organisms. 
A few of the mineral particles measure 1 or 2 mm., and 
several rounded pebbles 2 to 4 cm. in diameter. 
i (1 '00 %), Kadiolaria, Astror- 
! bizid®, Lituolid®, Diatoms. 
(2-00 %), m. di. O'lO mm., 
angular ; monoclinio and tri- 
clinic felspars, quartz, augite, 
bornblende, magnetite, oli- 
vine, very many small frag- 
ments of pumice and volcanic 
glass. 
(86 '29 %), amorphous matter, 
many minute fragments of 
minerals and siliceous organ- 
isms. 
The bag of the trawl was nearly filled with a brownish 
mud, in which were many large lumps of stiff blue 
clay, and several pumice stones more or less rounded 
ami of the light coloured fibrous variety. The beam 
of the trawl had many lumps of stiff blue clay attached 
to it. There was a thin watery red coloured layer in 
which the calcareous organisms appeared to be more 
abundant than in the stiff blue layers beneath. Many 
of the bottom-living Foraminifera are macroscopic. 
The fragments of pumice and volcanic glass have some- 
times a diameter of 1 mnu, some felspar and quartz 
fragments also attain nearly the same size. 
i (I’OO %), Radiolaria, Astror- 
! bizid®, Lituolid®, Sponge 
' spicules, a few Diatoms. 
j 
(25 '00 %), ra. di. O'lO mm., 
angular, but some rounded ; 
quartz, felspar, plagioclase, 
green mica, hornblende, glau- 
conite, pumice, magnetite. 
(69 '64 %), amorphous matter, 
many minute fragments of 
minerals, a few siliceous frag- 
ments. 
The trawl brought up a large quantity of the mud, some 
pumice stones and animals. The surface layer was red 
and not so compact as the stiff blue layer beneath. 
The washings of the mud were chiefly made up of 
arenaceous Foraminifera, many of which were macro- 
scopic. 
1 
Only a small quantity of these deposits was obtained in 
the sounding tube. In the trawl there were several 
large pieces of pumice. 
i 
(I'OO %), Radiolaria and one or 
two Diatoms. 
(5'00 %), m. di. 0'07 mm., 
angular; plagioclase, magne- 
tite, hornblende, quartz, 
pumice, red glassy particles, 
fragments of basaltic rocks, 
manganese grains. 
(94 '00 %), amorphous matter, 
small fragments of minerals 
and siliceous organisms. 
There were several pieces of pumice .stone in the clay 
brought up by the sounding tube, one of which was 
1 cm. in diameter. Before the blow-pipe the deposit 
fuses into a grey magnetic bead. No effervescence is 
observed when treated with acids. The fine washings 
are chiefly composed of minute fragments of pumice. 
(I'OO %), Sponge spicules, 
Astrorbizid®, Lituolid®. 
(3 '00 %), m. di. 0'50 mm., angu- 
lar ; monoelinic and tricliiiic 
felspars, augite, hornblende, 
magnetite, pumice, glassy vol- 
canic fragments, lapilli of 
basaltic and tracbytic rocks, 
red-brown granules. 
(5 '30 %), a small quantity of 
amorphous matter, associated 
with flocculent organic matter 
derived from the Foramiuifera, 
Alg®, &c. 
The dredge brought up a large quantity of the Coral Sand 
with some large fragments of Corals, many OrbitoUles, 
shells, &c. The diameter of some of theiiarticles making 
up the sand exceeded 1 cm. The mineral particles 
are remarkable for the perfection of their crystallo- 
graphic form ; the felspar often has the form of 
rhombic tables. 
Sydney to New Zealand. —cowtinweci. Olf New Zealand. New Zealand to Tongatabn. Oil’ Ton"atabn. 
