OCEANOGRAPHY OF THE PACIFIC. 25 



volcanic glass, some of it of the brown porous va^iet3^ some fila- 

 mentous, and the remainder sharp, angular, perfectl}^ transparent 

 fragments. 



Station lOOIf.. — 3,495 fathoms. Red clay. Brown, sticky mud, con- 

 sisting largel}' of amorphous cla3^ey matter, with a small quantitj^ of 

 mineral fragments of a distinctly volcanic character. 



Station 110 If.. — 2,214 fathoms. Volcanic mud. Specimen consists 

 of a single lapillus of brown porous volcanic glass about 6 millimeters 

 in diameter. 



Station 1110. — 2,870 fathoms. Volcanic mud. A few arenaceous 

 foraminifera {Rhal>daminl7ia, Hajplopliragmiimi) and radiolaria. Sedi- 

 ment composed almost entirely of volcanic glass. 



Station 1120. — 1,710 fathoms. Volcanic mud. Yellowish-brown 

 granular mud, containing a few foraminifera, many radiolaria, and 

 much volcanic sand, of which the larger particles are dark-brown glass. 



Station 1126. — 927 fathoms. Volcanic mud. A few foraminifera 

 {Glohigerina., Pidvimduia, Pullenia.^ Uvigerina). The rest of sedi- 

 ment volcanic sand. 



Station 1132. — 2,950 fathoms. Volcanic mud. Brownish gray, 

 granular. No foraminifera; few radiolaria. Large proportion of 

 volcanic sand, principally brown glass, and olive-green rounded min- 

 eral fragments. 



Station llJf'B. — 2,682 fathoms. Volcanic mud. No effervesence with 

 acid. Many radiolaria; a few diatoms. Small manganese concretions; 

 lapilli and fine fragments of volcanic glass. 



Station 1151. — 1,686 fathoms. Globigerina ooze. Very light gray. 

 Contains 30 per cent or more of foraminifera, coccoliths, and rhabdo- 

 liths. Small manganese concretions and vitreous mineral fragments, 

 with many red particles of palagonite. 



Station 1168. — 2,933 fathoms. Volcanic mud. No foraminifera, a 

 few radiolaria and diatoms; large proportion of rather coarse sand 

 and fine volcanic glass. 



Station 1185. — 1,491 fathoms. Volcanic mud. Color, light gray, 

 slowly turning black with time. Many foraminifera {Glohigerina., 

 Orhulina, Picllenia. Polystomella, BilocuUna., Nonionina., Nodosaria)'., 

 radiolaria numerous; diatoms few. Many manganese concretions; 

 much colorless volcanic glass, palagonite, and a variety of unidentified 

 minerals. 



Station 1197. — 1,698 fathoms. Volcanic mud. Light gray, becom- 

 ing black. A few foraminifera; very many radiolaria and diatoms. 

 Manganese concretions, volcanic glass, palagonite, and various uni- 

 dentified mineral fragments. 



Station 1207. — 665 fathoms. Blue mud. Blue black. Distinct 

 odor of hydrogen sulphide, increased by addition of hydrochloric acid. 



