REPORT ON THE DEEP-SEA DEPOSITS. 
477 
116. Manganese Nodule. — Station 276. 
Lat. 13° 28' S., long. 149° 30' W,, 2350 fathoms (Brazier). 
Weight, 6 '70 grains. 
Loss on ignition, 
Alumina, 
Ferric oxide, t 
Manganese oxide, / 
Calcium carbonate, 
Magnesium carbonate. 
Soluble silica. 
Insoluble residue. 
Loss on ignition. 
Portion soluble in bydrocliloric acid, . 
Portion insoluble in hydrocbloric acid. 
Grains, 
2-10 
1-26 
179 
0-40 
good trace 
075 
0-40 
670 
Per cent. 
31-34 
62-68 
5-98 
100-00 
117. Manganese Nodules. — Station 281. 
Acid = 73 -21 
Portion insoluble in Hydrochloric \ 
Acid = 10-79 / 
150° 17' W., 2385 fathoms (Brazier). 
Loss on ignition after drying at 230° Fahr,, 
. 16-00 
Copper, 
good trace 
Alumina, 
2-00 
Ferric oxide, 
. 29-00 
Calcium phosphate. 
. trace 
Manganese oxide. 
. 22-22 
Nickel, 
good trace 
Cobalt, 
trace 
Calcium sulphate. 
0-29 
Calcium carbonate, . 
2-79 
Magnesium carbonate. 
1-51 
'^Silica, 
15-40 
r Alumina, 
1-25 
Ferric oxide. 
1-33 
Lime, 
0-84 
Magnesia, 
0-15 
.Silica, 
7-22 
100-00 
Note. — Nodules, average weight 170 grains, apparently consisting of two varieties ; some on breaking were of 
brown colour, othei-s of a slatey-brown colour. The former constitute this analysis, the latter Analysis 119. 
a dark 
