386 PEECT SLADEN TEUST EXPEDITION. 



No. 30. September 25, 1905. 

 Lat. 7° 26'-4 S., Long. 55° 52'-2 E. ; depth, 2032 fathoms. 



GL0BI6ERINA OOZE : greyisli white. 



(Ialcium Carbonate : 78"66 per cent., pelagic and bottom-living Poraminifera, Echinoid spines. 



Rksidue : 21-34 per cent. ; — 



Siliceous Organisms (10 per cent.) : Sponge spicules, Radiolaria, Diatoms. 



Minerals : no crystalline minerals observed. 



Fine Washings (11 '34 per cent.) : amorphous clayey matter, with fragments of siliceous 

 organisms. 



No. 31. September 26, 1905. 

 Lat. 9° 34' S., Long. 52° 26' E. ; deptli, 2438 fathoms. 



GLOBIGERINA OOZE : fawn colour, slightly granular, slightly coherent. 



Caluicm Carbonate: 64'25 per cent., pelagic and bottom-living Poraminifera, Echinoid spines, 



Coccoliths. 

 EesiDUE : 35'75 per cent. : — 



Siliceous Organisms (1 per cent.) : Sponge spicules, Radiolaria, Diatoms, arenaceous 



Poraminifera. 

 Minerals (1 per cent.) : angular, m. di. 0'06 mm., quartz, orthoclase, volcanic glass, 

 plagioclase, hematite, biotite, chalcedony, magnetite, hornblende, and a decomposed 

 yellowish mineral. The appearance of the mineral particles suggests that they may 

 have been derived from a rhyolitic lava. 

 Fine Washings (33'75 per cent.) : amorphous clayey matter, with splinters of siliceous 

 organisms and minerals. 



No. 32. November 6, 1905. 

 Lat. 6° 06' 45" S., Long. 56° 37' 30" E. ; depth, 1462 fathoms. 



GLOBIGERINA OOZE : light slate-grey, slightly coherent. 



Calcium Carbonate : 7289 per cent., pelagic and bottom-living Poraminifera, Pteropods, Echinoid 

 spines, tubes of Serpula, Tunicate spicules, Alcyonarian spicules, Ostracodes, larval Lamelli- 

 branchs and Gasteropods, otoliths of Fish, Coccoliths. 

 Residue : 27*]1 per cent. : — 



Siliceous Organisms (10 per cent.) : Sponge spicules, Radiolaria, Diatoms, arenaceous 



Poraminifera. 

 Minerals (trace) : felspar, a brownish product of decomposition, a red birefringent particle 



resembling hematite. 

 Fine Washings (17'11 per cent.) : a little amorphous clayey matter, but mostly splinters of 

 siliceous organisms. 



