MURRAY — DEPOSIT-SAMPLES. 383 



No. 18. July 20, 1905. 

 Lat. 6° 10' 0" S., Long. 72° 58' 30" E. ; depth, 1574 fathoms. 



SLOBIGEKINA OOZE : greyish white, incoherent. 



Calcium Carbonate : 79'98 per cent., pelagic and bottom-living Foraminifera, Echinoid spines, 



Coccollths, Cephalopod beak. 

 Residue : 20"02 per cent. : — 



Siliceous Organisms (5 per cent.) : Sponge spicules. Diatoms, Radiolaria. 



Minerals (traces) : only one or two small mineral particles observed. 



Fine Washings (15'02 per cent.) : amorphous clayey matter, with siliceous splinters. 



No. 19. July 25, 1905. 

 Lat. 7° 22' S., Long. 71° 42' 45" E.; depth, 887 fathoms. 



GLOBIGEEINA OOZE : light grey, many of the shells discoloured with manganese, slightly coherent, 



finely granular. 

 Calcium Carbonate : 72-04 per cent., pelagic and bottom-living Foraminifera, Echinoid spines, a few 



Pteropods, Ostracodes, Fish bone, Coccoliths, Rhabdolitha. 

 Residue : 27'96 per cent. : — 



Siliceous Organisms (5 per cent.) : Sponge spicules, Radiolaria, Diatoms. 



Minerals (trace) : a few particles of manganese. 



Fine Washings (22'96 per cent.) : amorphous clayey matter, with siliceous splinters. 



No. 20. July 25, 1905. 

 Lat. 7° 30' S., Long. 71° 20'-7 E. ; depth, 664 fathoms. 



GLOBIGERINA OOZE : greyish white; very little material, so that an exact quantitative determination 



of calcium carbonate could not be made. 

 Calcium Carbonate : about 85 per cent., pelagic and bottom-living Foraminifera, Pteropods, 



Heteropods, Gasteropods, Lamellibranchs, Tunicate spicules, Echinoid spines. 

 Residue : about 15 per cent. : — 



Siliceous Organisms (5 pei- cent.) : Sponge spicules, Radiolaria, Diatoms. 

 Minerals : none observed. 



Fine Washings (10 per cent.) : amorphous clayey matter, with minute fragments of siliceous 

 organisms. 



No. 21. July 26, 1905. 

 Lat. 7° 40' S., Long. 71° r-5 E. ; depth, 1000 fathoms. 



GLOBIGERINA OOZE : greyish white, slightly coherent, chalky. 



Calcium Carbonate : 83-42 per cent., pelagic and bottom-living Foraminifera (many young shells), 

 Echinoid spines. Tunicate spicules. Fish otolith, small Pteropod shell overgrown by Serpula, 

 Coccolitlis, very few IJhabdoliths. 

 Residue : 16-58 per cent., greyish brown : — 



Siliceous Organisms (5 per cent.) : Sponge spicules, Radiolaria, Diatoms. 

 Minerals (traces) : one or two grains of palagonite and one cosmic spherule observed. 

 Fine Washings (11-58 per cent.) : amorphous clayey matter, with fragments of siliceous 

 organisms. 



