REPORT ON THE DEEP-SEA DEPOSITS. 
121 
Eesidite. 
Siliceous Organisms. 
Minerals. 
Fine Washings. 
Additional Obsekvations. 
O' (50 '00 %), Kadiolaria, very few 
arenaceous Foraminifera, 
Sponge spicules, casts of 
organisms, Diatoms. 
(55 '00 %), [Eadiolaria, Sponge 
spicules, Eaplophmgmium 
latidorsatum. Diatoms. 
1C (50 ■ 00%), Eadiolaria, Sponge 
I spicules, Troehammina ga- 
leata, Diatoms. 
)0 (65‘00 %), Eadiolaria, Diatoms. 
0i(50'00 %), Eadiolaria, Sponge 
spicules, Lituolidee, Diatoms. 
;5'00 %), Eadiolaria, Diatoms. 
’ j' lO’OO %), Eadiolaria, Sponge 
spicules {Hyalonema), Astror- 
hizidae, Lituolidae, Textu- 
laridae. Diatoms, 
60 "00%), Eadiolaria, 
hizidae. Diatoms. 
Astror- 
10 '00 %), Eadiolaria, Diatoms. 
(I'OO %), m. di. 0‘06mm., angu- 
lar ; felspar, augite, horn- 
blende, magnetite, small 
prismatic zeolitic crystals, 
manganese gi’ains, magnetic 
spherules. 
(1 "00 %), m. di. O'lO mm., angu- 
lar ; felspar, very few vol- 
canic particles. 
(1 '00 %), m. di. 0 '13 mm. , angu- 
lar ; felspar, manganese 
grains, magnetite, volcanic 
particles. 
(I'OO %), m. di. 0'06mm., angu- 
lar ; felspar, palagonite, man- 
ganese grains, black mica, 
glassy volcanic particles. 
(I'OO %), m. di. O'lO mm., angu- 
lar ; manganese grains, glassy 
particles, felspar, analcim, 
palagonite, magnetite.^ 
(I'OO %), m. di. 0'06 mm., angu- 
lar ; a few glassy volcanic 
particles, felspar, one or two 
manganese grains. 
(1'00%), m. di. 0'15 mm., 
angular ; magnetite, pala- 
gonite, mica, glassy volcanic 
particles, felspar, phillipsite. 
(1'00%), m. di. 0'15 mm., 
angular ; phillipsite, rounded 
manganese grains, volcanic 
particles. 
(49 '00 %), amorphous matter, 
minute fragments ot pumice 
and other minerals, fragments 
of siliceous organisms. 
(44 '00 %), much amorphous 
matter, Eadiolarian and other 
siliceous remains, some fine 
mineral particles. 
(49 '00 %), much fine amorphous 
matter, Eadiolarian and other 
siliceous remains, some 
mineral particles. 
(34 '00 %), Eadiolarian remains, 
amorphous matter, and a few 
mineral particles. 
(29 '00 %), Eadiolarian remains, 
amorphous matter, and some 
fine mineral fragments. 
(22'53 %), fine amorphous 
matter and remains of sili- 
ceous organisms. 
(8 '73 %), amorphous matter 
and siliceous remains. 
(28 '81 %), Eadiolarian remains, 
amorphous matter, and some 
minute mineral fragments. 
(67 '00 %), much amorphous 
matter, Eadiolarian remains, 
and fine mineral fragments. 
The dredge and the two tow-nets attached to it came up 
filled with the dark coloured ooze, from which were 
obtained a few small pieces of pumice and one man- 
ganese nodule. One or two fragments of OloMgerina 
and Pulvinulina were the only calcareous organisms 
observed. There are very many remains of Ethmodiscus. 
The most of the ooze was of a red-brown colour, but 
there were some very light spots. Eemains of Eth- 
modiscus are abundant. 
Only a small quantity came up in the sounding tube, 
much lighter in colour than in the last few soundings. 
Much of the ooze was rolled in little pellets. Many 
manganese grains were observed, one (broken) larger 
than a good sized marble. 
About a pint (over half a litre) of ooze of a red-brown colour 
came up in the tube ; near the top were some straw- 
coloured patches. The difference between the layer 
seems to be due to the manganese. One spherical 
granulated manganese grain, about the size of a pea, 
was noticed. 
In the upper part of the tube were some yellow coloured 
patches indicating a surface layer about an inch in 
thickness. The colour appears to be due to the smaller 
number of manganese grains in the upper layer. The 
Foraminifera are much corroded. 
There were about six inches (15 cm.) of ooze in the tube, 
the lower part pure white and gradually becoming 
brown on the upper surface. The white lower layer is 
a nearly pure Globigerina Ooze, while the upper brown 
layer seems to be composed of equal parts of siliceous 
and calcareous organisms. Coccoliths are abundant. 
In the washings from the trawl were some large deep-sea 
Keratosa, and a fragment of pumice about the size of a 
pigeon’s egg. 
Compare this with the deposit obtained on August 30th. 
It is dark red-brown in colour, showing light coloured 
patches at the upper surface. In the trawl there were 
a rounded piece of pumice, slightly impregnated with 
manganese, and two or three irregular manganese 
nodules which, on brealdng, presented nuclei of 
pumice. 
The Gloligerinss are large, but much broken. There are 
present a gieat number of manganese grains, some of 
them of considerable size. 
(DEEP-.SEA DEPOSITS CHALL. EXP. 1890 .) 
16 
Sandwich Islands to Tahiti — cotvtimoed. 
