PLATE 1 



Fig. 1. Sample 85, Globigerina ooze, south central Pacific, depth 

 2614 meters; 0.25- to 0.12-mm size grade; entire shells of im- 

 mature pelagic foraminifera (CaCOs content of sample, 94 per cent) 



Fig. 2. Sample 43, Globigerina ooze, southeast Pacific, depth 3631 

 meters; 0.25- to 0.12-mm size grade; mostly entire shells of im- 

 mature pelagic foraminifera (CaCOs content of sample, 89 per cent) 



168 



