REPORT ON THE DEEP-SEA DEPOSITS. 
89 
Residue. 
Additional Observations. 
Siliceous Organisms. 
Minerals. 
Fine Washings. 
(2‘00 %), Sponge spicules, Litu- 
olida;. 
(3 '00 %), m. di. 0'40 mm., 
angular ; felspar, plagioclase, 
augite, magnetite, fragments 
of brown and black volcanic 
glass. 
(8'56 %), a small quantity of 
fine amorphous matter and 
minute fragments of minerals 
and siliceous organisms. 
Here also the mineral particles are remarkable for the 
perfection of their crystallographic form. 
There was insufficient for subsequent examination. 
(1'00%), Sponge spicules, Litu- 
olida;. 
(3'00 %), m. di. 0'50 mm., an- 
gular ; felspar, plagioclase, 
augite, magnetite, fragments 
of volcanic rocks. 
(5'70 %), amorphous clayey and 
other matter (organic), minute 
mineral particles, and some 
fine siliceous remains. 
This deposit is composed of very large shells of Orhitolites 
complanata, with fragments of Molluscs, Corals, &c. 
(2‘00 %), Sponge spicules, Litu- 
olidiE. 
(1'00%), m. di. 0'06 mm., an- 
gular ; fragments of altered 
volcanic glass, felspar, horn- 
blende, augite, magnetite, 
black mica. 
(10'59 %), small quantity of amor- 
phous mattes, with a consider- 
able number of fragments of 
siliceous organisms. 
The Sponge spicules are derived chiefly from the genus 
Qeodia. 
There was insufficient for examination. 
(2 ’00 %), Sponge spicules, Litu- 
olidse. 
(I'OO %), m. di. 0'06 mm., an- 
gular ; fragments of altered 
volcanic glass, pumice, plagio- 
clase, olivine,homblende, black 
mica, augite, magnetite. 
(10 '69 %), amorphous matter, 
with a few mineral fragments 
and remains of siliceous or- 
ganisms. 
(3'00%), Sponge spicules, Kadio- 
laria, Astrorhizidse, Lituo- 
lidse, brown casts. 
(2 '00 %), m. di. 0'08 mm., an- 
gular ; hornblende, felspar, 
magnetite, black mica, white 
and black glassy volcanic 
particles. 
(15'35 %), amorphous matter, 
minute mineral particles, and 
small fragments of siliceous 
organisms. 
A few imperfect brown coloured casts of some of the cal- 
careous organisms were observed. There are large 
pieces of pumice present in the deposit. The percent- 
age of particles from the reefs is much less than in the 
other soundings nearer the reefs. 
(2 ‘00 %), Sponge spicules, As- 
trorhizidse, Lituolidse. 
(I'OO %), m. di. 0'08 mm., an- 
gular ; felspar, plagioclase, 
hornblende, magnetite, pu- 
mice. 
(10 '03 %), flocculent amorphous 
matter, minute fragments of 
minerals andsiliceous spicules. 
In the dredge there were several pieces of grey pumice 
stone overgrown with Carpenteria and Scrpnila. One 
of these pieces of pumice was as large as a hen’s egg. 
(I'OO %), Radiolaria, Astror- 
hizidie, Lituolidae, Diatoms. 
(I'OO %), m. di. O'lO mm., an- 
gular ; felspar, plagioclase, 
black mica, augite, horn blende, 
magnetite, many fragments of 
pumice, glassy volcanic par- 
ticles, lapilli of basaltic rocks, 
manganese. 
(53 '57 %), amorphous matter, 
with small fragments of mine- 
rals and siliceous organisms. 
The trawl brought up a branch of a tree which was in 
parts carbonised, also many fragments of pumice and 
some animals ; most of the animals were found on the 
piece of wood. The felspar and augite have sometimes 
vitreous inclusions and are covered with glassy scori- 
aceous matter. The pumice stones are all more or less 
rounded and vary much in size, the largest being 6 to 
8 cm. in diameter, and are all covered with a layer of 
hydroxides of iron and manganese which penetrate 
them more or less deeply. The pumice is to be re- 
ferred to augite-andesite ; it contains plagioclase and 
augite. 
(DEEP-SEA DEPOSITS CHALL. EXP. — 1890 .) 
12 
Oil Fiji Islands. joiji Islands to Now lloliridc.s. 
