Table 3. Synoptic table of bottom samples collected 



Sam- 

 ple 



89 



Sta- 

 tion 



Date 



1930 

 Callao Between 

 harbor Jan. 13 

 Peru and 



Feb. 6 



Hanga 



Rua, 



Easter 



Island 



Position 



and 

 depth in 

 meters 



12 00 S 

 77 00 W 



7 



27 00 S 

 109 00 W 



7 



Type of sample 



Estimated 

 CaC03 con- 

 tent in per 

 cent; basis 

 of estimate 



Color and physical characters 



Gray mud 



Volcanic calcar- 

 eous sand 



4; acid solu- 

 ble CaO 



70; acid 

 soluble eaO 



None 



None 



Sample 89. Contains over 5 per cent MgCOa; 70 per cent of sample consists of calcareous organisms: 

 madreporarian corals 15 per cent; coralline algae 12 per cent, Halimeda 3 per cent, foraminifera 10 per 

 cent gastropods 10 per cent, pelecypods 10 per cent, echinoid spines 8 per cent, tunicate spicules 1 per 



280 



