100 EXPEDITIOX OF THE "ALBATROSS," 1899-1900. 



the latter deposit containing over ninety species of Foraniinifera, no less 

 than eighteen of which are pelagic and make up 86 per cent of the deposit. 

 Yet at this station nearly 600 species of Radiolarians are recorded by 

 Haeckel as occurring in the deposit, and about thirty species of Diatoms. 

 The station south of the equatorial belt (272, Lit. 3' 48' S.,long. 152 56' W., 

 in 2600 fathoms) also contained 10.19 per cent of carbonate of lime, and 

 Station 273, lat. 5' 11' S., long. 152° 56' W., in 2350 fathoms, still further 

 south, only 2 per cent; the number of species of Radiolarians occurring in 

 the deposit at Station 272 being reduced to about 270 in number and to 

 about 110 at Station 273. At Station 274, lat. 7° 25' S., long. 152° 15' W., 

 the carbonate of lime is nearly 4 per cent and the Radiolarians in the 

 deposit nimiber over 175 species. 



In 2350 fathoms, Station 276, lat. 13^ 28' S., long. 149° 30' W., there is 

 28.28 per cent of carbonate of lime in the red clay, and over 110 species 

 of Foraminifera, sixteen of which are pelagic and make up 88 per cent 

 of tlie carbonate of liuie. Station 277, in 2325 fathouis, has over 9 per cent 

 of carbonate of lime. Station 278, lat. 17° 12' S., long. 149° 43' W., 1525 

 fathoms, over 20 ; and other stations in the viciuity of the volcanic mud 

 contain a varying amount of carbonate of lime. At Station 279 it con- 

 tains nearly sixty species of Foraminifera, four of which are pelagic and 

 make up 33 per cent of the carbonate of lime. 



On the line from Tahiti to Valparaiso the soundings (Stations 281-282) 

 in red clay south of Tahiti, though not more than 2450 fathoms in depth, 

 show but a trace of carbonate of lime, while the soundings to the east- 

 ward, somewhat less in depth but ia Globigerina ooze, carry from 65 to 

 26 per cent, and are in the line of the southeast trades (Station 283, lat. 

 26° 09' S., long. 145' 17' W. to 286, lat. 33° 29' S., long. 133° 22' W.). 

 There are nearly forty species of Foraminifera recorded from tlie deposit 

 of Station 280, south of Taliiti in 1940 fatlioms, thirteen of which are pelagic 

 species, making up 84 per cent of the carbonate of liuie, and at Station 284, 

 lat. 28° 22' S., long. 141° 22' W., tliere are eighty species noted as found 

 in the deposit in 1985 fathoms, sixteen species of which are pelagic, mak- 

 ing up 74 per cent of the carbonate of lime, which constitutes 65 per cent 

 of the deposit. In a somewhat deeper station, 285, lat. 32' 36' S., in 2375 



