on board H.M.S. 'Challenger.' 511 



numbers of pelagic Foraminifera, their broken-down parts, and 



Coccoliths ; a good many Eadiolarians and some broken Diatoms ; 



some amorphous calcareous but very little clayey matter. 



Pew, if any, mineral particles other than manganese grains, of which 



there were a few. A good deal of the bottom came up in the tow-net 



attached to the trawl. In the washings there was one piece of pumice 



about the size of a hen's egg. 



Sounding 293. 8th September, 1875. 2600 fathoms. Lat. 3° 48' S., 

 long. 152° 56' W. A Eadiolarian ooze of brown colour contain- 

 ing : — Immense numbers of E-adiolaria, Diatoms, and Ohallengeria ; 

 a few broken pieces of large pelagic Foraminifera, and one or two 

 perfect specimens ; a little amorphous clayey matter. 

 Few, if any, mineral particles other than the manganese particles, 

 which were abundant. One of these last (about the size of a pea), which 

 I broke, appeared to be formed on a nucleus of pumice. 



In the trawl were several manganese nodules ; one, the size of a hen's 

 egg, appeared to be formed on a nucleus of ordinary pumice. Also one 

 areolar piece of pumice (or lava) of a green colour like that from the 

 Sandwich Islands. Several yellow and red cherty-like pieces of mineral. 



Sounding 294. 9th September, 1875. 2350 fathoms. Lat. 5° 0' S., 

 long. 152° 26' W. A E/adiolarian ooze of a chocolate-colour con- 

 taining : — Great numbers of Eadiolaria and the broken exuviae of 

 these and other siliceous organisms ; a few pelagic Foraminifera 

 and their broken parts ; a few Coccoliths ; a few red and yellow 

 mineral particles ; manganese grains in great abundance. 



Sounding 295. 11th September, 1875. 2750 fathoms. Lat. 7° 25' S., 

 long. 152° 15' "W. A Eadiolarian ooze of a chocolate-colour con- 

 taining : — Great numbers of Eadiolaria and the exuviae of other 

 siliceous organisms ; many pieces of black manganese, some pieces 

 of red and yellow minerals, these latter being perfect crystals, and 

 some pieces of pumicestones ; some amorphous clayey matter ; a 

 few broken pieces of pelagic Foraminifera. 

 The trawl brought iip fully a peck of manganese nodules and some 



mud. Amongst the nodules were some with a nucleus of pumice, of 



sharks' teeth, and of the ear-bones of cetaceans ; some of the sharks' teeth 



had a very light coating of manganese. 



Sounding 296. 14th September, 1875. 2610 fathoms. Lat. 11° 11' S., 

 long. 150° 30' W. A dark chocolate clay containing chiefly : — Small 

 yellow crystals and rounded particles of a red mineral about the size 

 of a pea ; very many manganese particles and grains ; a few pieces 

 of Eadiolarian tests ; a few small sharks' teeth ; amorphous clayey 

 matter. 



Sounding 297. 16th September, 1875. 2350 fathoms. Lat. 13° 28' S., 



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