480 
THE VOYAGE OF H.M.S. CHALLENGER. 
133. Manganese Nodules. — Station 299. 
I.at. 33° 31' S., long. 74° 43' W., 2160 fathoms (Brazier). 
Portion soluble in Hydrochloric 1 
Acid -77-50 J ' 
Portion insoluble in Hydrochloric 
Acid = 12 -50 
Loss on ignition after drying at 230° Fahr. , 
. 10-00 
r Copper, ..... 
trace 
Alumina, ..... 
0-30 
Ferric oxide, .... 
14-00 
Calcium phosphate. 
trace 
Manganese oxide, .... 
. 46-89 
- Nickel, . . . ... 
small trace 
Cobalt, ..... 
Calcium sulphate, .... 
0-58 
Calcium carbonate. 
2-57 
Magnesium carbonate. 
4-16 
t Silica, ..... 
9-00 
r Alumina, ..... 
2-60 
Ferric oxide, .... 
0-70 
■1 Lime, ..... 
0-51 
1 Magnesia, ..... 
0-29 
1 Silica, ..... 
8-40 
100-00 
softer parts of some of the nodules. 
• 134. Manganese Nodules. — Station 299. 
Lat. 33° 31' S., long. 74° 43' W., 2160 fathoms (Brazier). 
Portion .soluble in Hydrochloric 
Acid — 80-64 
} 
Portion insoluble in Hydrochloric 
Acid — 8 -96 
} 
Loss on ignition after drying at 230° Fahr., 
. 10-40 
Copper, 
trace 
Alumina, 
Ferric oxide. 
5-86 
Calcium phosphate, 
trace 
Manganese oxide. 
. 63-23 
Nickel, 
small trace 
Cobalt, 
Calcium sulphate, . 
0-51 
Calcium carbonate, . 
2-79 
Magnesium carbonate. 
2-65 
Silica, 
5-60 
■ Alumina, 
2-40 
Ferric oxide, 
0-60 
Lime, 
0-34 
Magnesia, _ . 
0-13 
. Silica, 
5-49 
Note. — The hard parts of some of the nodules. 
100-00 
