480 
THE VOYAGE OF H.M.S. CHALLENGER. 
122. Manganese Nodule. — Station 285. 
Lat. 32° 36' S., long. 137° 43' W., 2375 fathoms (Brazier). 
Portion soluble iii Hydrochloric 
Acid -60-52 
Portion insoluble in Hydrochloric 
Acid = 20-18 
} 
Loss on ignition after drying at 230° Fahr., 
. 19-30 
f Copper, 
. trace 
Alumina, 
6-20 
Ferric oxide, 
. 20-10 
Calcium phosphate. 
good trace 
Manganese oxide, . 
. 16-14 
Calcium sulphate, . 
0-87 
Calcium carbonate, . 
4-36 
Magnesium carbonate. 
0-75 
. Silica, 
. 12-10 
r Alumina, 
2-40 
Ferric oxide. 
3-00 
Lime, 
1-91 
Magnesia, . 
0-32 
1 Silica, 
. 12-55 
100-00 
123. Manganese Nodule. — Station 285. 
Lat. 32° 36' S., long. 137° 43' W., 2375 fathoms (Brazier). 
Portion soluble in Hydrochloric 
Acid = 63 -09 
Portion insoluble in Hydrochloric 
Acid — 23'91 
Loss on ignition after drying at 230° Fahr., 
. 13-00 
' Copper, 
trace 
Alumina, 
9-50 
Ferric oxide. 
. 16-40 
Calcium phosphate. 
2-63 
= - 
Manganese oxide, . 
. 22-06 
Calcium sulphate, . 
1-05 
Calcium carbonate. 
0-97 
JIagnesium carbonate. 
0-98 
.Silica, 
9-50 
' Alumina, 
4-70 
Feme oxide. 
1-10 
« - 
Lime, 
1-40 
Magnesia, . 
0-21 
.Silica, 
. 16-50 
124. Manganese Nodule. — Station 285. 
Lat. 32° 36' S., long. 137° 43' W., 2375 fathoms (Brazier). 
100-00 
Portion soluble in Hydrochloric 
Acid — 75"81 
Portion insoluble in Hydrochloric 
Acid -15 -96 
} 
Loss on ignition after drying at 230° Fahr., 
8-23 
Copper, 
trace 
Alumina, 
8-14 
Ferric oxide. 
. 25-04 
Calcium phosphate. 
trace 
Manganese oxide. 
8-54 
Calcium sulphate, . 
0-38 
Calcium carbonate, . 
2-49 
Magnesium carbonate. 
0-62 
Silica, 
30-60 
Alumina, 
1-25 
Ferric oxide. 
3-49 
Lime, 
0-70 
Magnesia, 
0-52 
Silica, 
. 10-00 
100-00 
