I 
REPORT ON THE DEEP-SEA DEPOSITS. 
117 
Residde. 
Additional Observations. 
Siliceous Organisms, 
Jlinerals. 
Fine Washings. 
(3 ‘00 %), Radiolaria, a few 
Sponge spicules, Diatoms. 
(I'OO %), m. di. 0'08 mm., 
angular; sanidine, magnetite, 
hornblende, manganese grains, 
one microscopic crystal of 
quartz observed, cosmic 
spherules. 
(96 '00 %), amorphous matter, 
very many fine mineral 
particles, glassy fragments, 
and fragments of siliceous 
organisms. 
The deposit does not effervesce when treated with acids, 
and no carbonate of lime organisms are observed when 
examined by the microscope, with the exception of a 
few small teeth of fish. The trawl was much torn 
when it came up, but contained a quantity of man- 
ganese nodules. The nuclei of the nodules consist of 
pumice, volcanic glass, and Carcharodon teeth. 
(2 '00%), Radiolaria, arenaceous 
Foraminifera, Sponge spicules. 
Diatoms. 
(I'OO %), m. di. 0'06 mm., 
angular ; felspar, hornblende, 
magnetite, manganese, pu- 
mice. 
(97 '00 %), very many fine 
mineral particles, glassy frag- 
ments, fragments of siliceous 
organisms, some amorphous 
matter. 
A small dredge was used with swabs, and a tow-net 
was attached to the dredge and another at the weights. 
There were some clay and manganese nodules in both 
the dredge and tow-nets. In the washings of a large 
quantity of this deposit there were observed one or 
two Glohigerina injlata, and their broken remains, a 
few specimens of Miliolina,, arid arenaceous Fora- 
minifera. 
(I'OO %), Radiolaria, Sponge 
spicules. Diatoms. 
(I'OO %), m. di. 0'08 mm., 
angular ; broken down pumice, 
felspar, glassy volcanic par- 
ticles, hornblende, palagonite, 
magnetite. 
(98 '00 %), much red coloured 
amorphous matter, fine pumice 
and minerals, siliceous re- 
mains. 
A large quantity of the clay came up, and in the water- 
bottle there was a twin nodule of manganese about 
inches (38 mm.) in largest diameter. An upper and 
lower side of the nodule can be seen ; it was covered 
with a reticulated Rhizopod, probably Rhizammina 
algaeformis. 
(1 '00 %), Radiolarian fragments. 
(I'OO %), m. di. 0'06 mm., 
angular; pumice, plagioclase, 
felspar, manganese grains, 
volcanic glass, hornblende, 
augite, palagonite, magnetite. 
(98 '00 %), much amorphous 
matter, fine mineral particles 
and a few Radiolarian re- 
mains. 
The deposit obtained at this station is, in every respect, 
similar to the previous one. The washings consist 
largely of broken down pumice. Among the minerals 
are many manganese grainsi 
(I'OO %), Radiolaria, Sponge 
spicules, Trochammiyia, trul- 
lissata. 
(I'OO %), m. di. 0'08 mm., 
angular ; felspar, volcanic 
glass, black mica, hornblende, 
magnetite, manganese grains, 
palagonite. 
(98 '00 %), much amorphous 
matter, fine pumice and other 
mineral particles and sili- 
ceous remains. 
A large quantity of the deposit was obtained from the 
dredge. The greater part was sifted and all passed 
through the finest sieves, with the exception of some 
manganese nodules and sharks’ teeth; one piece of 
pumice, about the size of a pigeon’s egg, some smaller 
pieces of pumice, a few worm-tubes, and three or four 
Foraminifera. The sharks’ teeth have a thick coating 
of manganese. , One of the pieces of pumice was red in 
colour and appeared to be undergoing alteration. 
1 
The valves of the sounding tube had become jammed and 
consequently had not opened on reaching the bottom. 
The outside of the tube was marked for nearly 2 feet 
with clay of a red colour, and enough was scraped off 
with the finger for rough examination. This indicated 
much the same bottom as the last, the great propor- 
tion being pumice in a very fine state of division, and 
there were pieces of black manganese and Radiolarian 
remains. 
1(1 '00 %), Sponge spicules, a few 
I Radiolaria, Astrorhizidee. 
1 
(1'00%), m. di. 0'06 mm., 
angular ; felspar, glassy volcanic 
particles, magnetite, augite, 
vesicular lapilli, hornblende, 
manganese grains. 
(98 '00 %), much amorphous 
matter (pumice), mineral 
and siliceous remains. 
About a pint (over half a litre) of the clay of a uniform 
character came up in the sounding tube. It was of a 
similar nature to the last two or three soundings. 
(I'OO %), a few Radiolaria, 
1 Rhizammina algeeformis, 
'• Haplophragmium latidor- 
satum. 
(I'OO %), m. di. 0'06 mm., 
angular ; vesicular lapilli, 
plagioclase, felspar, volcanic 
glass, magnetite, hornblende, 
augite, palagonite, olivine, 
glauconite. 
(98 '00 %), much red-brown 
amorphous matter, disinteg- 
rated pumice, fine minerals, 
and remains of siliceous 
organisms. 
A considerable quantity of the bottom was obtained in 
the sounding tube ; it was composed chiefly of red and 
brown amorphous matter, disintegrated pumice, and 
volcanic ashes. Several pieces of pumice, about the 
size of a pea, were obtained when washing a quantity of 
the clay. 
Yokoliama to Sandwicli Islands— coniMiitec?. 
