REPORT ON THE DEEP-SEA DEPOSITS. 
57 
KESIDUE. 
Additional Obseevations. 
Siliceous Organisms. 
Minerals. 
Fine 'Washings. 
I'OO %), a few Sponge spicules 
and Diatoms. 
1 '00 %), a few Sponge spicules, 
Radiolaria, Lituolidae. 
(2 '00 %), m. di. O'lO mm., 
angular; monoclinic and tri- 
clinic felspars, quartz, mica, 
hornblende, glassy fragments, 
glauconite. , 
(I'OO %), m. di. O'lO mm., 
angular ; felspar, volcanic 
glass, augite, mica, magnetite, 
manganese, pumice, glau- 
conite. 
(86 '28 %), amorphous matter, 
with fragments of minerals, 
Eadiolaria, and Diatoms. 
(64 '07 %), amorphous matter, 
with fragments of minerals 
and siliceous organisms. 
Most of the organisms are fragmentary. Many of the 
mineral particles are evidently ice-borne. 
Some of the Globigerinidee have grains of manganese 
scattered over and adhering to their surfaces. Amor- 
phous clayey matter partially fills some of the Fora- 
minifera. In the washings from the trawl one small 
piece of pumice, containing a large crystal of sanidine, 
was obtained. 
1 '00 %), a few Sponge spicules, 
Eadiolaria, Astrorliizidae, 
Lituolidae, Diatoms. 
(I'OO %), m. di. 0'07 mm., 
angular ; sanidine, augite, 
magnetite, fragments of 
pumice, glauconite, quartz. 
(63 '00 %), amorphous matter, 
many fine mineral particles, 
fragments of Radiolaria and 
Diatoms. 
Glauconite in these depths is unusual and is only repre- 
sented by a few grains. Dredge contained one hundred- 
weight (.50 kilogrammes) of deposit, in which .^were 
some pellets of manganese. 
1 '00 %), Sponge spicules, 
Radiolaria, Haplo-phragmium. 
(I'OO %), m. di. 0'07 mm., 
angular ; felspar, augite, 
magnetite, volcanic glass, 
one or two small particles of 
quartz covered with limonite, 
manganese grains. 
(70'41 %), amorphous matter, 
with minute fragments of 
minerals and siliceous organ- 
isms. 
The organisms are, for the most part, fragmentary. 
There is little difference between this and the previous 
and succeeding deposits, though this is classed as a Red 
Clay. 
I'OO %) Eadiolaria, a few 
Sponge spicules, Astrorliizidae, 
Lituolidae. 
(1-00%), m. di. O'lO mm., 
angular ; monoelinic felspar, 
augite, pumice, lapilli, mag- 
netite. 
(62'69 %), amorphous matter, 
fragments of Radiolaria and 
minerals. 
This deposit is similar to that obtained at Station 65, 
except in having a higher percentage of carbonate of 
lime. 
.'00 %), Radiolaria, Sponge 
spicules, Astrorliizidae, Litu- 
olidae. 
•00 %), Radiolaria, Sponge 
spicules, one or two arenaceous 
Foraminifera. 
(I'OO %), m. di. 0'07 mm., 
angular ; monoclinic and 
triclinic felspars, augite, mag- 
netite, volcanic glass. 
(I'OO %), m. di. 0'07 mm., 
angular; a few fragments of 
felspar, magnetite, volcanic 
glass. 
(43 '70 %), amorphous matter,^ 
fragments of minerals and 
siliceous organisms. 
(26 '24 %), amorphous matter, 
fragments of minerals and 
siliceous organisms. 
The rise in the percentage of carbonate of lime with 
decrease of depth is here again illustrated. The 
appearance of the pelagic Foraminifera is different from 
that in tropical deposits. 
... 
Only a small quantity of the deposit came up in the 
tube ; the examination of this quantity, however, 
indicated a deposit, in some respects, similar to that at 
Station 68. 
•00 %), Radiolaria, Sponge 
spicules, Astrorhizidae, Litu- 
olidae, a few Diatoms. 
(1'00%), m. di. O'lO mm., 
angular ; a few fragments of 
sanidine, volcanic glass, mag- 
netite, manganese grains. 
(14 '69 %), amorphous matter, 
fragments of minerals, Eadio- 
laria, and Diatoms. 
In the washings of a large quantity of the deposit from 
the trawl there were a great many Pteropod shells and 
fragments, also concretions of the ooze with black 
spots. 
•00 %),’’ Eadiolaria, Sponge 
spicules, Astrorhizidae, Litu- 
olidae, imperfect brown casts, 
a few Diatoms. 
(I'OO %), ni. di. O'lO mm., 
angular; fragments of pumice, 
felspar, lapilli, magnetite, 
augite, manganese. 
(8 '69 %), amorphous matter, 
with minute fragments of 
minerals and siliceous organ- 
isms. 
In the trawl there were several aggregations of the ooze 
from 3 to 4 cm. in diameter, perforated by worms and 
coated with a deposit of manganese ; also a fragment of 
compact volcanic rock more or less rounded and about 
7 cm. in longest diameter ; this fragment has a slight 
deposit of manganese over the whole surface, with a 
SfiiyitZa-tube attached. There was also a fragment of 
sandstone, containing mica and stained with limonite, 
and a large cinder, evidently from some ocean steamer. 
(deep-sea deposits chall. exp. — 1890.) 
■ 
8 
Bermuda to Azores — continued. 
