EEPORT ON THE DEEP-SEA DEPOSITS. 
99 
ilESIDUE. 
ADDI5IONAL OBSERVATIONS. 
Siliceous Organisms. 
Minerals. 
Fine Washings. 
(I’OO %), Sponge spicules. 
(I'OO %), m. di. 0‘08 mm., 
angular ; felspar, pj'roxene or 
hornblende, pumice. 
(4'30 %), fine amorphous matter 
and a few fine mineral par- 
ticles. 
Nothing was obtained in the sounding tube, but in the ' 
trawl there were fragments of a hard, irregular, honey- 
combed conglomerate of a j^ellow-white colour, coated 
in parts with manganese and overgrown with Serpula, 
Polyzoa, and Sponges. The largest fragment measured 
12 by 8 inches (30 by 20 cm.), and was not unlike those 
obtained on September 26, but much harder and the 
orgaijisms were less apparent. Microscopic sections show 
the whole mass to be composed for the most part of Fora- 
minifera and calcareous Algae, transformed into a crys- 
talline limestone. Microscopic crystals of carbonate of 
lime have been formed in all the hollows of these con- 
cretions, and the cement is also crystalline. From 
consideration of the organisms, this deposit, unlike 
that at Station 192a, has been formed in comparatively 
shallow water. In addition to the rock fragments, 
there were also pieces of Corals. In the residue after 
acid there were observed a number of small rounded 
bodies, isolated or grouped, yellow and transparent; 
these must be organic. 
Only a trace of the bottom came up in the sounding 
tube, and this was a fine sandy mud formed of red, 
white, and black mineral particles, mixed with a few 
small Foraminifera and Radiolaria. There was also an 
angular pebble of augite-andesite, much decomposed 
and coated with manganese. 
) (3'00 %), Sponge spicules, 
LituoMse. 
(45‘00 %), m. di. 0'20 mm., 
angular ; felspar, plagioclase, 
pyroxene, hornblende, magne- 
tite, pumice, palagonite, 
lapillii 
(52 '00 %), amorphous matter of 
a brown colour and many fine 
mineral particles. 
In the trawl there came up one or two pieces of rock 
about an inch in diameter, volcanic conglomerate the 
same as found off Goonong Api, several palm fruits, and 
pieces of wood and bark. 
) j(2 '00 %), Sponge spicules, Eeo- 
' phax nodulosa,, Gavdryina 
, dphmiella, Diatoms. 
(48 '00 %), m. di. OTO mm., 
angular ; plagioclase, pyro- 
xene, hornblende, magnetite, 
pumice, vitreous lapilli. 
(50 '00 %), fine amorphous 
brown coloured matter, many 
fine mineral particles, . and a 
few siliceous remains. 
There were many small fragments of pumice. 
Only a small quantity of mud was brought up. It was- 
green in colourand contained Diatoms, Coccoliths,. GZo6i- 
gerina, Radiolaria, and small mineral particles. 
I 
I 
I M'OO %), Radiolaria and a few 
Diatoms. 
(5'00 %), m. di. 0'08 mm., 
angular ; magnetite, felspar, 
plagioclase, quartz, augite, 
hornblende, pumice, coloured 
altered particles, brown vol- 
canic glass, small basaltic 
lapilli. 
(94 "00 %), amorphous matter. 
Four or five small pebbles came up in the sounding 
tube, some basaltic,, others limestone. The former 
were covered with attached Foraminifera of various 
kinds. ! 
The deposit which came up in the tube and water-bottle 
was exceedingly soft and of a slate blue colour, with r 
here and there a tinge of red. 
J 
Amboina to Samboangan. Samboangan to Manila. 
