KEPORT ON THE DEEP-SEA DEPOSITS. 
129 
Residue. 
Siliceous Organisms. 
Minerals. 
Fine Washings. 
Additional Observations. 
OC 
(1'00%), Radiolaria, Sponge 
spicules, Thurammina pap- 
illata. 
0 I (1 '00 %), a few Radiolaria. 
25 
32 
(I'OO %), Sponge spicules, a few 
Radiolaria and arenaceous 
Foraminifera. 
(I'OO %), a few Sponge spicules, 
Astrorhizidse, arenaceous Tex- 
tularidae. 
09 
(I’OO %), m. di. O'lO mm., 
angular ; manganese grains, 
phillipsite, felspar, augite, 
glassy volcanic particles. 
(I'OO %), m. di. 0"20mm., angu- 
lar; magnetite, augite, olivine, 
felspar. 
(I'OO %), m. di. 0 05 mm., 
angular ; crystals and irregu- 
lai' fi-agments of plagioclnse, 
•sanidine, augite, rhombic 
pyroxene, magnetite, altered 
glassy and other volcanic par- 
ticles, grains of manganese. 
(3 '00 %), m. di. 0'08 mm., 
angular; sanidine, plagioclase, 
augite, altered olivine, splinters 
of volcanic glass, man- 
ganese grains, magnetite. 
(3'00 %), m. di. O'lO mm., angu- 
lar ; manganese grains, fels- 
par, plagioclase, augite, 
phillip.site, crystals, quartz, 
magnetite, glassy volcanic 
particles. 
(98 '00 %), much dark brown 
fine amorphous matter, a few 
fragments of siliceous organ- 
isms, and manganese grains. 
(98 '00 %), much fine dark 
brown amorphous matter, 
manganese grains, and minute 
mineral particles. 
(14 '25 %), a small quantity of 
amorphous matter coloured 
by manganese, minute mineral 
particles, and small fragments 
of siliceous organisms. 
(51 '32 %), fine dark red-brown 
amorphous matter, fine 
mineral particles. 
(97 '00 %), much fine amorphous 
matter of a dark chocolate 
colour, and some fine mineral 
fragments. 
The clay was not so dark coloured as at the last station. 
In one place there were one or two spots of a yellow 
colour. A few small manganese nodules overgrown with 
Hypcrammina vagans were observed. The tube had 
been buried about 18 inches (45 cm.) in the deposit. 
No bottom was in the tube or on the outside. The ti-awl 
brought up a great quantity of manganese nodules, 
but no deposit ; on the iron work were some patches 
of cla3^ On examining this it was found to contain 
very many yellow crystals of phillipsite, a few pelagic 
Foraminifera and their broken parts, and a few Cocco- 
liths and Rhabdoliths. A great many manganese 
grains were noticed. Among the nodules in the trawl 
were a few earbones of Cetaceans and fragments of 
bones. One pebble was a fragment of diabase contain- 
ing altered plagioclase, augite, replaced by a chloritic 
mineral, quartz, epidote, black mica, titanic iron and 
leucoxene. 
No deposit came up in the tube. 'About a gramme of the 
clay was found adhering to the bottom of the water- 
bottle, insufficient for detailed examination. Under 
the microscope it showed the yellow ciwstals of 
phillipsite, manganese gi'ains, some Coccoliths, a good 
many fragments of pelagic Foraminifera, and a 
Uvigerina. 
Inside the tube there were two or three small pellets of 
Red Clay. On breaking the.se down and examining them 
with the microscope, Olohigerina and Palmnulma 
remains were found. These are small compared with 
those further north. One or two 2'extularia, a good 
many Coccoliths, portions of Rhabdoliths, a good many 
manganese grains, and a few yellow crj'stals of phillipsite 
were also observed. In the bag of the trawl there was 
only one manganese nodule, the size of a marble, to 
which was attached an egg capsule. 
Coccoliths are comparatively abundant. In this deposit 
are found crystals of plagioclase, loose or coated with 
volcanic glass, in the form of rhombic tables, also 
crystals of augite and rhombic pyroxene, and frag- 
ments of palagonite. The trawl line carried away in 
heaving in. 
The most abundant of the pelagic Foraminifera is a thick- 
shelled Olohigerina hulloides. The trawl brought up 
about a dozen manganese nodules, two sharks’ teeth, 
and a small grey pebble of augite-andesite. The 
largest of the nodules is about the size of a pigeon’s 
egg. Several have nuclei of palagonite, others appear 
to be made up entirely of manganese. The teeth and 
pebble are slightly coated with manganese. 
The lower part of this deposit did not effervesce with 
acid ; only one or two fragments of pelagic Foraminifera 
and a few broken pieces of sharks’ teeth were observed. 
In the upper portion there were a few whole and a good 
many broken pieces of pelagic Foraminifera, one or two 
.small Coccoliths, and fragments of Rhabdoliths. The 
great mass of the washings was composed of small 
pellets or particles of manganese (one small nodule the 
size of a pea was noticed), along with crystals of phil- 
lipsite and fragments of palagonite. 
(deep-sea deposits chall. exp. — 1890.) 
17 
Tahiti to Valparaiso — continued. 
