THE DEPTH AND MARINE DEPOSITS OF THE PACIFIC OCEAN. 81 
The types of deposit to which these 77 samples are referred are as 
follows : — 
(Hopigetina UCG0 ss ie ie ea ees oe es Se ee 
BOG AS as 6 ee Se ee a ee ee 
PON OOM se i gn <a k iw se Ce ew ae 
PGCCIOTAG OM Oe eg ee, Pe ee 
NOMIC TING ek os 8 a oe ee 
7 6c 
DerrarLep Desoriprions oF THE Drposrt-SAMPLES. 
( Numbered consecutively as collected.) 
No. 1. Station 2, 27th August, 1899. 
Lat. 28° 23’ N.; long. 126° 57’ W.; depth, 2368 fathoms. 
RED CLAY: brown, with lighter-colored patches, but appears uniform in 
composition ; contains a few small manganese nodules, 
CALCIUM CARBONATE: 1 per cent, a few coccoliths. 
Resipue: 99 per cent, brown :— 
Siliceous Organisms (1 per cent), represented by fragments of Radiolaria. 
Minerals (small traces), mean diameter 0.06 mm.; the most abundant 
mineral is felspar, represented by orthoclase and plagioclases having the op- 
tical properties of andesine and labradorite. A more acid plagioclase appears 
to be present, but its exact nature could not be determined. Volcanic glass 
(one splinter 2 mm. long), augite (very rare), probably hornblende undergoing 
decomposition, manganese grains, red palagonite, and small lumps of a 
whitish opaque substance were also observed. Mineral particles are here 
extremely rare, only a few having been obtained from the washing of a large 
quantity of material. 
Fine Washings (98 per cent), amorphous clayey matter. 
Besides a good supply of the Red Clay, many manganese nodules and 
slabs of palagonitic tuff described in the sequel, the “Albatross” obtained at 
this station some rock fragments, determined by Dr. Teall, H. M. Geological 
Survey, as: — 
(1) hornblende-andesite, 
(2) serpentine, 
(3) fine grained sandstone, 
(4) black chert." 
1 See Mem. Mus. Comp. Zodl., Vol. XXVI,, No. 1, p. 71, 1902. 
6 
