REPORT ON THE DEEP-SEA DEPOSITS. 
135 
Residue. 
Additional Observations. 
Siliceous Organisms. 
1 Minerals. 
1 Fine Washings. 
(3-00 %), Sponge spicules, 
Astrorhizidee, Lituolidse, Tex- 
tularidfe, Diatoms. 
1 
(65'00 %), m. di. 0'20 mm., 
rounded and angular; mica, 
quartz, plagioclase, horn- 
blende, rhombic pyroxene, 
glauconite, small fragments of 
crystalline rocks. 
(27 '84 %), amorphous matter, 
many tine mineral particles, 
and some sihoeous remains. 
These three deposits are similar to each other, but 
vary as to amorphous matter, number of shell frag- 
ments, and mineral particles. Many of the Foramini- 
fera shells are filled with glauconite, which remains as 
casts on treatment with acid. At 'the second station 
many of the mineral fragments measure from 0 '5 to 2 
mm. 
i2'00 %), Sponge spicules, 
Astrorhizidae, Textularidse, 
Diatoms. 
(I'OO %), m. di. O'lO mm., 
rounded and angular; ortho- 
clase, plagioclase, quartz, 
hornblende, tourmaline, 
splinters of schisto-crystalline 
and volcanic rocks, glauconite. 
(97 '00 %), mnch fine clayey 
matter, some mineral and 
siliceous remains. 
Two soundings were taken on this date. The deposits 
are similar, the former containing perhaps larger traces 
of carbonate of lime, while the latter disintegrates 
more readily in water. The organisms noted were 
obtained from the washings of the trawl. 
1 '00 %), Sponge spicules, a few 
Diatoms. 
(75 '00 %), m. di. 0'15 mm., 
rounded and angular; quartz, 
felspar, plagioclase, green 
hornblende, chlorite, zircon, 
epidote, particles of crystal- 
line rooks. 
(24 '00 %), fine clayey matter of 
a blue-grey colour, fine 
mineral fragments, a few 
remains of Sponge spicules 
and Diatoms. 
There was very little effervescence with acid indicating 
only traces of carbonate of lime. The minerals are 
small, the largest being only about 0 '5 mm. in diameter. 
IfOO %), Sponge spicules, Textu- 
laridae, glauconitic casts, a 
few Diatoms 
(35'00 %), m. di. 0'15 mm., 
angular and rounded; quartz, 
felspar, plagioclase, augite, 
hornblende, black and white 
mica, zircon, glauconite, 
fragments of crystalline rocks. 
(34'16 %), clayey matter, 
mineral particles, a few 
siliceous remains. 
A few glauconitic casts remain after treatment with acid. 
Some pebbles and rock fragments, measuring from 
1 mm. to 4 cm. in diameter, were embedded in the de- 
posit. 
'00 %), Clavulina communis. 
(30 '00 %), m. di. 0'20 mm., 
angular and rounded ; 
quartz, plagioclase, felspar, 
brown hornblende, augite, 
pumice, magnetite, lapilli. 
(69 '00 %), fine clayey matter, 
minute mineral fragments. 
Some rock fragments, measuring over 1 cm. in diameter, 
were noticed. The felspar contains brown glassy in- 
clusions. The mineral particles seem to be the product 
resulting from the disintegration of a coarse-grained 
modern volcanic rock or a coarse volcanic ash, but if 
this be the case glassy particles are very rare. 
( 00 %), Sponge spicules, Am- 
modiseus incertus, a few 
Diatoms. 
(3 '00 %), m. di. O'lO mm., 
rounded ; quartz, olivine, fel- 
spar, zircon, mica, hornblende. 
(96 '00 %), much blue-grey 
clayey matter, and some fine 
mineral particles. 
The mud is of a much finer character than that obtained 
at the previous stations. 
( 00 %), Sponge spicules, 
rextnlaridffi, casts, Diatoms. 
(2'00 %), m. di. O'lO mm., 
angular and rounded; quartz, 
felspar, plagioclase, horn- 
blende, angite, zircon, glau- 
conite, glaucophane, epidote, 
altered glauconite. 
(62 '93 %), amorphous matter, 
fine mineral fragments, and 
some siliceous remains. 
Imperfect casts of Foraminifera remain after treating the 
deposit with acid. 
Gulf of Penas to Sandy Point tlirougli Magellan Strait — continued. 
