REPORT ON THE DEEP-SEA DEPOSITS, 
115 
flESIDUE. 
Additional Observations. 
Siliceous Organisms. 
Minerals. 
Fine Washings. 
No deposit came up in the sounding tube or water-bottle. 
On allowing the water to settle, some fine red amor- 
phous particles and a few black mineral grains col- 
lected, but nothing further was obtained to indicate the 
nature of the bottom. 
(I'OO %), a few Radiolaria, 
Astvorhizidce, Lituolidae, Dia- 
toms. 
1 
J 
(I'OO %), m. di. 0'06 mm., 
angular ; felspar, sanidine, 
pumice, magnetite, manga- 
nese grains, cosmic spherules. 
(98 '00 %), amorphous matter, 
fragments of siliceous organ- 
isms, minute fragments of 
minerals. 
The trawl brought up a large quantity of the clay, a 
number of animals, and many pumice stones mostly sur- 
rounded with concentric deposits of manganese. The 
pumice contains very large crystals of sanidine, plagio- 
clase, and augite. The carbonate of lime organisms 
mentioned are extremely rare, being obtained from the 
washings of a large quantity of the deposit. The 
Pteropods and Globigerinidae. may have been caught by 
the nets on their way towards the surface. 
(I'OO %), Radiolaria, Reophax 
mdulosa, Diatoms. 
(I'OO %), m. di. 0'06 mm., 
angular ; volcanic minerals, 
plagioclase, augite, magnetite, 
pumice, manganese grains. 
(98 '00 %), much amorphous 
chocolate coloured matter, 
mineral and siliceous remains. 
A piece of black manganese about the size of a bean, 
and many smaller pieces, were observed. 
(5 '00 %), Radiolaria, Sponge 
spicules, Astrorhizidse, Litu- 
olidae, Diatoms. 
(I'OO %), m. di. 0'06 mm., 
angular ; sanidine, plagio- 
clase, augite, magnetite, frag- 
ments of pumice, greenish 
volcanic glass, black and 
reddi.sh grains of manganese. 
(37 '93 %), amorphous matter, 
minute fragments of minerals 
and siliceous organisms. 
The trawl brought up much ooze, many pumice stones, 
and a large number of animals. There were several 
hundreds of rounded fragments of pumice, containing 
large crystals of sanidine, plagioclase, and augite ; 
about thirty of the largest had an average diameter of 
30 cm., and a very large number about 2 cm. in diameter. 
One or two Pteropod, Heteropod, SMA.Ianthina shells 
were noticed in the washings of a large quantity. 
(5'00 %), Radiolaria, Sponge 
spicules. Diatoms. 
(I'OO %), m. di. 0'06 mm., 
angular ; manganese grains, 
felspar, glassy volcanic frag- 
ments, magnetite, palagonite, 
hornblende, black mica. 
(83 '94 %), much red or yellow- 
red amorphous matter, minute 
remains of siliceous organisms 
and minerals. 
There was a considerable quantity of clay in the tube. 
The colour was lighter than in the last few soundings. 
The upper portion, one inch thick, was red and con- 
tained no calcareous organisms, while the lower part of 
the tube was filled with a light coloured mud con- 
taining the organisms indicated in the description. 
(10 '00 %), Radiolaria, Astror- 
hizidae, Lituolidae, Diatoms. 
1 
(o'OO %), m. di. 0'15 mm., 
angular ; hornblende often 
surrounded with glass, mag- 
netic oxide of iron abundant 
and often in crystals, frag- 
ments of pumice, manganese 
grains. 
(85 '00 %), amorphous matter, 
fragments of minerals and 
siliceous organisms. 
The trawl came up torn but contained much clay, 
many manganese nodules, pumice stones, and several 
animals. The carbonate of lime organisms are 
extremely rare and fragmentary (see remai'ks, St. 244). 
One large tooth of Lamna, and several smaller teeth, 
were obtained. 
Radiolaria, Diatoms. 
Palagonite, felspar, manganese 
grains. 
No deposit came up in the tube. The instrument had 
been buried 18 inches into the clay, and enough of the 
bottom was obtained to define its nature ; there was, 
however, insufficient for a detailed description. Radio- 
laria are evidently abundant. 
! 
(10*00 %), Eadiolaria, Diatoms. 
! 
i 
(I'OO %), m. di. 0'06 mm., 
angular ; felspar, phillipsite, 
mica, magnetite, hornblende, 
manganese grains. 
(89 '00 %), much yellow-red 
amorphous matter, siliceous 
and mineral remains. 
The bottom was a Red Clay with a few patches of white 
or lighter coloured material near the bottom. There 
are no traces of calcareous organisms, but Radiolaria 
are abundant. 
(10 '00 %), Radiolaria, Sponge 
spicules, Hormosina carpen- 
teri, Diatoms. 
(I'OO %), m. di. 0'07 mm., 
angular; volcanic glass, scoriae, 
pumice, manganese grains, 
felspar, palagonite. 
(89 '00 %), much red amorphous 
matter, mineral and siliceous 
remains. 
About a quart (over a litre) of the clay came up in the 
tube; it was of a uniform character throughout. 
I 
Yokohama to Sandwich Islands — continued. 
