REPOKT ON THE DEEP-SEA DEPOSITS. 
Residue. 
ntl Siliceous Organisms. 
Minerals 
5'00 %), Eadiolaria, Sponge 
spicules, Astrorhizidse, Lituo- 
lida;, Diatoms. 
I'OO %), Eadiolaria, Sponge 
spicules, Astrorhizidse, Litu- 
' olidse, arenaceous Tex tularidae. 
1 ’00 %), Eadiolaria, Astror- 
hizidae, Lituolidm, Textu- 
larid®, casts of Foraminifera, 
Sponge spicules. Diatoms. 
"00 %), Eadiolaria, Sponge 
spicules, Reophax difflagifor- 
mis, Textularidaj. 
(I'OO %), m. di. 0 06 mm., 
angular ; glassy volcanic 
particles, felspar, plagioclase, 
hornblende, augite, magne- 
tite, quartz, small particles of 
andesitic rocks. 
(2'00 %), m. di. 0'08 mm., 
angular ; felspar, plagioclase, 
magnetite, augite, small vol- 
canic lapilli, palagonite, man- 
ganese grains. 
(I'OO %), m. di. 0'07 mm., 
angular ; felspar, quartz, 
augite, pumice, palagonite, 
manganese grains, glauconite, 
zircon. 
(lO'OO %), m. di. O'lO mm., 
angular ; brown vesicular vol- 
canic glass, felspar, plagio- 
clase, augite, hornblende, 
magnetite, many particles of 
pumice, quartz, glauconite. 
(96'28 %), m. di. 0'17 mm., 
rounded; quartz, yellow-green 
mica flakes with apatite inclu- 
sions, felspar, fragments of 
ancient crystalline rocks and 
schists, hornblende, green 
chloritic substance covering 
the quartz and the other 
mineral particles. 
Fine Washings. 
(78'60 %), much amorphous 
matter, fine mineral and 
siliceous remains. 
(63 '21 %), grey coloured amor- 
phous matter, fine mineral 
particles, and a few remains of 
siliceous organisms. 
(I'OO %), a few fine mineral par- 
ticles. 
(42 '91 %), amorphous brown 
coloured matter, fine mineral 
and siliceous remains. 
(15 '69 %), red-brown amorphous 
matter, mineral and siliceous 
Additional Observations. 
A section of about four inches (10 cm.) came up in the 
sounding tube; the uppermost inch was of a red colour 
containing no calcareous organisms, the lower portion 
being a blue-grey compact mud containing the organisms 
noted, two. or three pieces of pumice, and several man- 
ganese grains. One of the tow-nets at the trawl was 
half full of a red-brown mud, and some of this was in 
the bag of the trawl and adhering to the nodules, &c. 
In the trawl there was over a quart . (over a liti'e) of 
nodules and fragments of pumice. Some of these 
nodules are manganese throughout ; others are formed 
of pumice surrounded by a deposit of manganese, while 
one had a nucleus of altered basalt. In addition there 
were a hard angular piece of granite, small hai'dened con- 
cretions of the bottom, and a fragment of a Cepbalopod 
beak. On one of the nodules was attached a large Scal- 
pellum darwinii. In the washings from the trawl were 
observed great numbers of Rhizammina algm/ormis. 
Only a small quantity of ooze came up in the tube. A 
considerable quantity came up in the trawl, amongst 
which were several small basaltic pebbles having a 
slight coating of manganese, and three or four pieces of 
a hardened tufa of a red coloui', flat, and coated with 
manganese to the thickness of i or J an inch (6 or 12 
mm.). The ooze contains also a good many black 
particles and pebbles about the size of peas. 
A considerable quantity of ooze was obtained in the 
sounding tube. In it were small pieces of manganese, 
pumice, and other mineral particles. In the trawl was 
about a peck (9 litres) of the ooze, in which were a 
number of manganese nodules, with nuclei of fragments 
of basalt with a vitreous base pa.ssing into palagonite, 
overgrown with worm tubes and Hyperammina vagans, 
some volcanic pebbles, and a piece of granite with a j 
slight coating of manganese. There was also a fragment ' 
of a siliceous rock resembling flint, composed of cal- I 
cedony and grains of crystalline silica. Eed and j 
yellow casts of the Foraminifera remain after treat- I 
ment with acid. Some particles of quartz are large 
and rounded. | 
The tube brought up a considerable quantity of stiff light , 
blue-grey mud containing the organisms noted. The ! 
surface of the section was of a yellowish colour and ! 
much softer than the deeper layers. The Foraminifera 
are fewer and pumice particles more abundant in the 
lower layers. 
Gulf of Pefins to 
Sandy Point through 
Valaparaiso to Gulf of Penas. Magellan Strait. 
