42 THE DEPTH AND MARINE DEPOSITS OF THE PACIFIC OCEAN. 
age diameter of the more numerous fragments is 0.5 mm., but one piece 
attains 1 cm. in diameter. The rock is an augite-andesite, colored dark 
green by a high percentage of chloritic material. The fragments are 
angular, not rounded. 
Fine Washings (24.80 per cent), brownish-green amorphous matter con- 
taining only a very few minute mineral particles. 
No. 3. Station 4505, 5th November, 1904. 
Lat. 3° 11.6’ N.; long. 84° 57.4’ W.; depth, 1705 fathoms. 
GLOBIGERINA OOZE: dark gray, slightly plastic, dries into lumps coher- 
ent to a small extent only ; no macroscopic elements. 
CALCIUM CARBONATE: 38.35 per cent, shells, complete and broken, of 
Foraminifera belonging mostly to the genera Globigerina and Pulvinulina, 
Echinoid spines, coccoliths, and rhabdoliths. 
REsipvE: 61.65 per cent: — 
Siliceous Organisms (0.5 per cent), a few Sponge spicules, Radiolaria, and 
diatoms. 
Minerals (1.5 per cent), a few grains of pale augite and magnetite with 
a mean diameter of 0.2 mm. These minerals are masked by an abundance 
of small gray lumps, recalling in their general appearance comminuted 
pumice. One fragment of volcanic glass was detected, which probably be- 
longed to a piece of Pele’s hair, as it is rod-like and semi-circular, with the 
bore occupying the greater part of the diameter. 
Fine Washings (59.65 per cent), amorphous, flocculent matter, brown 
when wet, gray when dry, in which exceedingly minute particles of augite 
can be seen, but in small amount, together with broken Sponge spicules. 
The following is a list’ of the species of Foraminifera observed in the 
deposit from this station : — 
Biloculina depressa, d’ Orb. Haplophragmium emaciatum, Brady. 
ys “ var. murrhyna, Schw. Verneuilina pygmea (Egger). 
We irreqularis, VOrb. Gaudryina pupoides, V Orb. 
Spiroloculina tenuis (Czjzek). a: My var. chilostoma, Rss. 
Miliolina tricarinata (d’Orb.). Bulimina elegans, d’Orb., var. exilis, Brady. 
fe trigonula (Lamk.). Ehrenbergina serrata, Rss. 
Haplophragmium nanum, Brady. Lagena sulcata (W. & J.), var. interrupta, 
be anceps, Brady. Will. 
1 The lists of species of Foraminifera in the deposits from Stations 4505, 4691, 4705, and 4717 
have been drawn up by Mr. F. G. Pearcey, formerly an assistant in the Challenger Office, now of the 
Bristol Museum. 
