REPORT ON THE DEEP-SEA DEPOSITS. 
47 
112. Manganese Nodules (internal portions). — Station 274. 
Lat. 7° 25' S., long. 152° 15' W., 2750 fathoms (Brazier). 
Portion soluble in Hydrochloric \ 
Acid = 84 ‘50 J 
Portion insoluble in Hydrochloric 1 ^ 
Acid =4-10 
Loss on ignition after drying at 230° Fahr., 
. 11-40 
r Copper, ..... 
0-79 
Alumina, . . . . 
0-30 
Ferric oxide, .... 
9-75 
Calcium phosphate. 
0-35 
Manganese oxide, .... 
. 55-89 
Nickel, ..... 
good trace 
Cobalt, ..... 
Calcium sulphate, .... 
0-58 
Calcium carbonate, . 
3-88 
Magnesium carbonate. 
4-16 
'' Silica, ..... 
8-80 
f Alumina, ..... 
0-31 
Ferric oxide, .... 
0-78 
Lime, ..... 
0-33 
Magnesia, ..... 
0-14 
, Silica, 
2-54 
100-00 
Portion soluble in Hydrochloric \ _ 
Acid = 77 -56 J 
Acid = 6 '14 
)ules (average sample). — Station 276. 
149° 30' W., 2350 fathoms (Brazier). 
Loss on ignition after drying at 230° Fahr. , 
16-30 
Copper, ..... 
good trace 
Alumina, ..... 
5-00 
Ferric oxide, .... 
. 40-50 
Calcium phosphate. 
fair trace 
Manganese oxide, .... 
. 11-40 
Nickel, ..... 
trace 
Cobalt, ..... 
trace 
Calcium sulphate, ... 
0-87 
Calcium carbonate, .... 
5-06 
Magnesium carbonate. 
1-13 
Silica, ..... 
13-60 
Alumina, ..... 
1-30 
Ferric oxide, .... 
1-50 
Lime, ..... 
0-70 
Magnesia, ..... 
0-70 
Silica, ..... 
1-94 
100 -00 
