476 Mr. J. Murray on Oceanic Deposits examined 



pelagic Foraminifera and Coccoliths and some Pteropod shells; a 



few mineral particles. 

 Soundings 39 & 40. 18th February, 1873. 1525 fathoms. Lat, 25° 45' K, 



long. 20° 12' W. Nothing in the sounding-tube. 

 The dredge brought up a large quantity of dead coral, a branching 

 gorgonoid. The axis of this coral was white ; but the surface was black, 

 with a thick coating of manganese. Some pelagic Foraminifera and 

 Pteropod shells adhered to the base of the coral, and about a large 

 siliceous sponge. 

 Sounding 42. gist February, 1873. 2740 fathoms. Lat. 24° 20' K, 



long. 24° 28' W. A red clay containing : — Much amorphous matter ; 



very many exceedingly fine mineral particles ; a few whole and a 



good many broken parts of pelagic Foraminifera ; one or two 



Radiolaria. 

 Sounding 43. 23rd February, 1873. 2950 fathoms. Lat. 23° 22' K, 



long. 27° 49' W. A red clay containing : — Amorphous matter and 



many very fine mineral particles ; a good many pelagic Foraminifera 



and their broken parts. 

 Sounding 44. 24th February, 1873. 2750 fathoms. Lat. 23° 15' N-, 



long. 30° 56' W. A red clay containing : — Much amorphous matter ; 



mineral particles, all exceedingly fine and in immense numbers ; a 



few remains of broken pelagic Foraminifera ; no siliceous remains 



observed. 

 Sounding 45. 25th February, 1873. 2800 fathoms. Lat. 23 c 12' N., 



long. 32° 56' W. A red clay containing : — Much amorphous matter 



and very many exceedingly fine mineral particles ; a few broken 



remains of pelagic Foraminifera. 



Sounding 46. 26th February, 1873. 3150 fathoms. Lat. 23° 23' N., 

 long. 35° 10' W. A red clay containing : — Much amorphous matter 

 and many very small mineral particles ; a few broken pieces of pelagic 

 Foraminifera ; a few manganese grains. 



Sounding 47. 28th February, 1873. 2720 fathoms. Lat. 23° 10' N., 

 long. 38° 42' W. A red clay containing : — Much amorphous matter ; 

 very many small white and red mineral particles; a few pelagic 

 Foraminifera. 



Sounding 48. 1st March, 1873. 2575 fathoms. Lat. 22° 35' N., long. 

 40° 37' W. A red clay containing : — Much amorphous matter ; 

 very many exceedingly fine mineral particles ; a good many pelagic 

 Foraminifera, Coccoliths, and Khabdoliths. 



Sounding 49. 3rd March, 1873. 2025 fathoms. Lat. 21° 57' N., long. 

 43° 29' W. A Globlgerina-ooze containing : — Very many pelagic 

 Foraminifera, Coccoliths, and Ehabdoliths ; a great many manganese 

 particles, many of them rather large ; many pieces of a cherty- 



