110 THE DEPTH AND MAKINE DEPOSITS OP THE PACIFIC OCEAN. 



Washed Samples. 



Station 24, 14th September, 1899. 

 Lat. 8° 14' S. ; long. 139° 46' W. ; depth, 1040 fathoms. 



GLOBIGERINA OOZE : very httle material, consisting of the usual pelagic 

 Foraminifera, otoliths, etc., with fragments of manganese nodules, and many 

 small grains of manganese. 



Station 25, 14th September, 1899. 

 Lat. 8° 48' S. ; long. 139° 48' W. ; depth, 830 fathoms. 



The material consists of two manganese nodules with palagonitic nuclei, 

 the larger 25 mm. in maximum diameter, along with smaller particles 

 and grains of manganese, mixed with a few pelagic and bottom-living 

 Foraminifera. 



Station 26, 14th September, 1899. 

 Lat. 8° 52' S. ; long. 139° 52' W. ; depth, 1173 fathoms. 



PTEROPOD OOZE or CORAL MUD : the material does not apparently rep- 

 resent the deposit in situ, being incoherent and fine-grained, consisting of 

 Pteropod fragments, pelagic and bottom-living Foraminifera, Echinoid spines, 

 Ostracodes, Polyzoa, Coral fragments, small shells Mollusc, Serpula, coccoliths ; 

 Diatoms, Sponge spicules ; with palagonite, much oligoclase (partly decom- 

 posed), a little olivine, a bright red mineral, probably decomposition pro- 

 duct of olivine, and volcanic glass. 



Station 27, 15th September, 1899. 

 Lat. 9° 1' S. ; long. 140° 4' W. ; depth, 687 fathoms. 



PTEROPOD OOZE or VOLCANIC MUD: the material has the appearance of 

 having been partly waslied, is granular and of a dirty gray color, contains small 

 Pteropods, pelagic and bottom-living Poraiiiinifera, Echinoid spines, Bryozoa, 

 Ostracodes ; Sponge spicules, Diatoms ; and a great amount of mineral parti- 

 cles (probably 30 per cent of the sample), consisting principally of volcanic 

 glass, felspar, and magnetite. Although apparently washed, a small portion 

 was submitted to analysis, and gave 56.4 per cent of calcium carbonate. 



