F 
REPORT ON THE DEEP-SEA DEPOSITS. 
51 
Residue. 
Siliceous Organisms. 
Minerals. 
Fine Washings. 
(I'OO %), Eadiolaria, Sponge 
spicules, Lituolidae, one or 
two Diatoms. 
(I'OO %), m. di. 0'07 mm., 
angular ; felspar, volcanic 
glass, augite, magnetite. 
(20 '87 %), amorphous matter, 
small fragments of minerals 
and siliceous organisms. 
(1 -00 %), Eadiolaria, Sponge 
spicules, Astrorhizidfe, Litu- 
olidie, one or two Diatoms. 
(I'OO %), m. di. 0'07 mm., 
angular ; felspar, volcanic 
glass, augite, magnetite. 
(16'69 %), amorphous matter, 
many minute fragments of 
siliceous organisms, and small 
mineral particles. 
(I'OO %), Sponge spicules, one 
i or two Eadiolaria, A schema- 
; Tiella, Lituolidae. 
(I'OO %), m. di. 0'07 mm., 
angular ; felspar, augite, vol- 
canic glass, magnetite. 
(35 '53 %), amorphous matter, 
minute fragments of minerals 
and siliceous organisms. 
(1 ‘00 %), a few Sponge spicules 
and Eadiolaria, one or two 
specimens of Eaplophrag- 
1 mium and Gaudryina. 
(2 '00 %), m. di. 0'08 mm., 
angular, a few rounded ; sani- 
dine, plagioclase, augite, horn- 
blende, magnetite, volcanic 
glass, black mica, quartz, 
manganese grains. 
(46 '16 %), amorphous matter, 
with minute fragments of 
minerals and siliceous spicules. 
1 (1 '00 %), one or two fragments 
; of siliceous spicules, Litu- 
' olidae. Diatoms. 
' 
(5'00 %), m. di. O'lO mm., 
angular ; quartz, monoclinic 
and triclinic felspars, tourma- 
line, augite, hornblende, 
mica, manganese grains, 
glauconite. 
(65 '69 %), amorphous matter, 
with a great many minute 
fragments of minerals and a 
few fragments of siliceous 
organisms. 
1 (1 '00 %), Sponge spicules, two 
or three Eadiolaria, a few 
I imperfect casts, Lituolidae. 
i 
'i 
ii 
(3'00 %), m.di. 0'06 mm., angu- 
lar ; felspar, hornblende, 
augite, magnetite, mica, 
quartz, glauconite, glassy 
volcanic particles, coloured 
altered particles, a few man- 
ganese grains. 
(50 '17 %), amorphous matter, 
many fine mineral particles, 
and a few fragments of sili- 
ceous organisms. 
;j(l "00 %), Sponge spicules, Eadio- 
laria, Rhabdammina, Litu- 
1 olidae. Diatoms. 
i) 
(40 '00 %),m. di. 0'20 mm., angu- 
lar ; monoclinic and triclinic 
felspars, augite, ' hornblende, 
quartz, tourmaline, lapilli, 
mica, glauconite, a few man- 
ganese grains, pyrites, mag- 
netite. 
(34 '66 %), amorphous matter, 
with minute fragments of 
minerals, a few fragments of 
Eadiolaria and Diatoms. 
1(1 '00 %), a few Sponge spicules, 
Eadiolaria, Astrorhizidae, 
1 Lituolidae, Diatoms. 
(40 '00 %), m. di. 0'20 mm., 
angular ; felspar, augite, horn- 
blende, quartz, mica-schist 
and other rocks, some of them 
chloritic, magnetite, glauconite. 
(34 '39 %), amorphous matter, 
many fine mineral particles, 
fragments of Sponge spicules 
and Diatoms. 
Additional Observations. 
With the exception of the Foraminifera the organisms 
are mostly fragmentary ; some of the fragments are 
macroscopic. 
Some of the shells are macroscopic. The pelagic organ- 
isms here predominate over the fragments of calcareous 
Alg®, Polyzoa, &c., washed from the reefs. The finer 
portions contain many more Coccoliths and Ehabdo- 
liths than the deposits nearer the reefs. 
This bank is covered with Corals, Serpula, and calcareous 
pebbles. 
With the exception of the Foraminifera all the other 
organisms are represented by minute fragments ; some 
of these are much corroded as if being slowly dissolved. 
Dredge contained a quart bottle (over a litre) of deposit. 
The organisms in this deposit are very much broken up 
and decomposed. One or two grains of manganese, 
1 to 3 mm. in diameter, were observed. 
The minerals are mostly angular ; a few of them approach 
0’4 mm. in diameter. Note decrease of carbonate of 
lime with increasing depth. This deposit is inter- 
mediate in character between a Ked Clay and Blue 
Mud ; the mineral particles are ice-borne. 
No deposit was obtained in the sounding tube, but a 
small quantity of the ooze came up in the dredge. The 
mineral particles are chiefly angular, but among them 
are many rounded quartz grains. 
This deposit had a reddish surface layer. Rhabdoliths 
have almost entirely disappeared, only a few being 
recognised on the examination of a large quantity of 
the deposit. The minerals are mostly angular ; a few 
are rounded. 
In first sounding line parted ; in second no bottom at a 
depth exceeding 2600 fathoms. 
The minerals are mostly angular ; some fragments of 
quartz and gneissic rocks are about 1 mm. in diameter. 
Several rounded pebbles were obtained in the washings 
from the dredge, measuring from 2 to 6 cm. in 
diameter, also a few irregular fragments of hardened 
deposit, forming a conglomerate of a yellow-green 
colour ; amongst these were several rounded compact 
chalky nodules, apparently formed of the deposit, 
measuring from 1 to 3 cm. in diameter. 
Oil' Bermuda — continued. Bermuda to Halifax. 
