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THE DEPTH AND MARINE DEPOSITS OF THE PACIFIC OCEAN. 657 
Resipue: 46.99 per cent, dark chocolate-brown : — 
Siliceous Organisms (traces), Sponge spicules, spherical Radiolaria, and 
a few arenaceous Foraminifera. 
Minerals (1.4 per cent), angular; mean diameter 0.1 mm., principally 
augite; magnetite is abundant, mostly as particles firmly attached to other 
minerals; felspars belonging to basic plagioclases are present, but cannot 
be specifically determined ; also brownish and greenish products of decom- 
position of some minerals, augite amongst others, as one particle of augite 
is seen to pass laterally into a greenish-brown amorphous substance; a 
few flakes of hematite. 
Fine Washings (45.59 per cent), very flocculent, brown clay, with a 
few mineral particles and siliceous remains. 
No. 27. Station 4695, 23rd December, 1904. 
Lat. 25° 22.4’ 8.; long. 107° 45’ W.; depth, 2020 fathoms. 
GLOBIGERINA OOZE: chestnut-brown, plastic and sticky; dries into 
light reddish-gray coherent lumps. 
CALCIUM CARBONATE: 62.30 per cent, pelagic Foraminifera, mostly broken 
shells and rather small individuals; Fishes’ teeth and Echinoid spines. 
ResipvuE: 37.70 per cent, rich chestnut-brown : — 
Siliceous Organisms (traces), a few Sponge spicules and arenaceous 
Foraminifera. 
Minerals (0.5 per cent), angular; mean diameter 0.1 mm., with frag- 
ments of palagonite 1 mm. in diameter, and a reddish decomposed fragment 
of rock, 3 mm. in diameter. Augite, plagioclase (labradorite), magnetite, 
and manganese grains are equally abundant. Of the minerals forming the 
fragment of rock alluded to, only a few crystals of augite and plagioclase 
have escaped decomposition, the remaining portion being transformed into 
an amorphous reddish-brown substance. The trawl also brought up frag- 
ments of pumice, volcanic glass, and palagonitic tuff, described elsewhere. 
Fine Washings (37.20 per cent), dark chestnut-brown flocculent clay, 
very free from admixtures of mineral particles, though a few of these can 
be seen. 
No. 28. Station 4697, 24th December, 1904. 
Lat. 23° 24.4’ S.; long. 106° 2.2’ W.; depth, 2188 fathoms. 
RED CLAY: very dark chocolate-brown, with yellowish patches ; dries into 
hard lumps, giving a shining brown streak. 
