| 
| 
THE DEPTH AND MARINE DEPOSITS OF THE PACIFIC OCEAN. 73 
organisms, apparently calcareous Sponges, in the shape of flat slabs formed 
by the agglomeration of twelve-pointed spicules, but easily crumbling under 
pressure; the spicules are all joined to each other, so that there is very little 
space between them, the whole body being thus rather compact, though not 
strong. 
ResiDvE: 36.38 per cent : — 
Siliceous Organisms (traces), a few large Radiolaria and Diatoms remain 
in the coarser part of the residue, but most of the siliceous remains pass 
off with the “fine washings,” of which they constitute a large part. 
Minerals (0.20 per cent), angular, varying from 0.01 to 0.10 mm. in 
diameter; felspar, manganese grains, brown decomposed particles, appar- 
ently decomposed augite, and a few volcanic glass fragments. 
Fine Washings (36.18 per cent), light-brown clay, with many fragments 
of siliceous organisms, and minute mineral particles. 
No. 58. Station 4540,* 17th February, 1905. 
Lat. 3° 25.6’ N.; long. 115° 54’ W.; depth, 2200 fathoms. 
GLOBIGERINA OOZE: light brown, incoherent, gray with a reddish tinge 
when dried. 
CALCIUM CARBONATE: 69 per cent, pelagic Foraminifera, with a few 
bottom-living forms (Rotalids), and small Echinoid spines. 
ResipvuE: 31 per cent : — 
Siliceous Organisms (0.10 per cent), Radiolaria, Diatoms, and Sponge 
spicules; many siliceous remains pass off with the “ fine washings,” of which 
they make up perhaps one-half the volume. 
Minerals (traces); a few particles of magnetite and limonite were 
observed. 
Fine Washings (30.90 per cent), flocculent, brown, clayey matter, with 
many fragments of siliceous organisms, and a few mineral particles too 
minute for identification. 
No. 59. Station 4541,* 18th February, 1905. 
Lat. 4° 55'N.; long. 112° 27’ W.; depth, 2174 fathoms. 
GLOBIGERINA OOZE: dark gray, slightly reddish, rather sticky, but inco- 
herent when dried ; the Foraminifera shells are not quite fresh, being gener- 
ally impregnated with clayey matter. 
