PLATE IX 



Fig. 1. Sample 17, ferruginous (volcanic) Globigerina ooze, southeast 

 Pacific, depth 3098 meters; 1- to 0.5 -mm size grade; whole shells 

 of pelagic foramlnlfera. Including Orbulina uniyersa. Globiger - 

 inoides conglobata and sacculifera. Globigerina conglomerata; man- 

 ganese flakes from coating of lava-fragments, volcanic glass 

 shards (CaCOs content of sample, 74 per cent) 



Fig. 2. Sample 53, volcanic Globigerina mud, northeast Pacific, depth 

 3036 meters; 0.5- to 0.25-mm size grade; volcanic glass and pum- 

 ice, pelagic and benthonic foramlnlfera, including Globorotalia 

 tnincatulinoides and tumida. Globigerlnella aeauilateralis. Cassid - 

 ulina fava (CaCOs content of sample, 48 per cent) 



