THE DEPTH AND MARINE DEPOSITS OF THE PACIFIC OCEAN. 97 
part of the material soluble in hydrochloric acid is in a crystalline form, 
apparently reef fragments more or less transformed into dolomite (dolomitic 
limestone). 
ResipuE: 66.4 per cent, chocolate colored : — 
Siliceous Organisms (1 per cent), Sponge spicules. 
Minerals (30 per cent), mean diameter 0.15 mm., rounded and angular, 
phillipsite, palagonite, volcanic glass, decomposed plagioclase, manganese 
grains, some of which attain a diameter of 4 mm., hematite, magnetite, de- 
composed minerals, 
Fine Washings (35.4 per cent), amorphous clayey matter impregnated 
with manganese. 
This deposit is most peculiar, and would merit a close examination, but 
unfortunately little material is available. 
No. 43. Station 156, 2nd November, 1899. 
Lat. 20° 31’ S.; long. 142° 0’ W.; depth, 2468 fathoms. 
RED CLAY: very little material, dark brown, with yellow patches, coher- 
ent, clayey. 
CALCIUM CARBONATE: 25.85 per cent, small pelagic and fragments of 
bottom-living Foraminifera, Echinoid spines, Fish teeth and otoliths, cocco- 
liths, and other calcareous horseshoe-shaped bodies. 
ResipugE: 74.15 per cent, chocolate colored :— 
Siliceous Organisms (1 per cent), Sponge spicules, arenaceous Foramini- 
fera. 
Minerals (30 per cent), angular and rounded, mean diameter 0.15 mm., 
phillipsite in isolated crystals, twins, and aggregates, manganese grains, 
plagioclase, volcanic glass, palagonite, augite. (Some of the phillipsite agere- 
gates attain a diameter of 0.5 mm., and some of the manganese grains 1 mm.) 
Fine Washings (43.15 per cent), amorphous clayey matter, with many 
minute mineral particles. 
No. 44. Station 157, 2nd November, 1899. 
Lat. 20° 46.5’ S.; long. 142° 51’ W.; depth, 2315 fathoms. 
GLOBIGERINA OOZE: very little material, dark brown, with white spots 
(Foraminifera), coherent, clayey, with fragments of decomposed volcanic 
glass impregnated with manganese, the largest being 7 mm. in diameter. 
CALCIUM CARBONATE: 41.8 per cent, the mean of two analyses which 
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