REPORT ON THE DEEP-SEA DEPOSITS. 
493 
151. Central Portion of Whale’s Bone much impregnated with Manganese. — Station 286. 
Lat. 33° 29' S., long. 133° 22' W., 2335 fathoms (Dittmar). 
The outer portions of this specimen were perfectly black ; most of the inner portion also was black, but a 
small portion in the centre had remained untinged with manganese. This comparatively uncoloured central 
portion was removed, prep>ared for analysis, and used for the following determinations : — 
P, 
Moisture, . . . . . . . 2'87 
Phosphoric acid, . . . . . 29‘13 
Fluorine, . . . . . . . 1‘44 
Lime, . . . . . . . 36'05 
Portion insoluble in hydrochloric acid, . . 2‘91 
Ratio of equivalents of phosphoric acid and fluorine — 
1 : 0-062 
There was an appreciable quantity of manganese present, and also a trace of cobalt. 
R 
E. 
1-23] 
0- 076 
1- 287 
152. External Portion op Whale’s Bone much impregnated with Manganese. - 
Lat. 33° 29' S., long. 133° 22' W., 2335 fathoms (Dittmar). 
-Station 286. 
The outer manganiferous portion of the specimen used in Analysis 151 was completely analysed, with the 
following results : — 
P. 
P. 
E. 
Portion insoluble in hydrochloric acid. 
5-76 
Total water, ....... 
9-77 
Manganous oxide, ...... 
20-22 
Loose oxygen, .... . . 
3-49 
Ferric oxide, ...... 
6-54 
Alumina, ....... 
1-66 
Lime, ....... 
19-71 
0-7039 
Magnesia, . ..... 
7-42 
0-3710 
Potash, ....... 
0-55 
Soda, ....... 
1-12 
Phosphoric acid, ...... 
I 8-591 
0-7860 
Carbonic acid, . . . 
3-87 
0-1759 
Traces of copper, chlorine, fluorine, and loss. 
1-30 
100-00 
manganese is probably present mostly as binoxide, combined chemically with water and part of 
protoxides. 
^ Equal to 40-90 per cent, tricalcic phosphate. 
153. Portion op Whale’s Bone much impregnated with Manganese. — Station 286. 
Lat. 33° 29' S., long. 133° 22' W., 2335 fathoms (Dittmar). 
The manganese was pretty well difilused through all the specimen. 
Found in 100 parts — 
Moisture, ....... 
Combined water, ...... 
Phosphoric acid, ...... 
Fluorine, ....... 
5- 49 
6 - 88 
3 -05 -f "" P®^’ 
1 ti'icalcic phosphate. 
0-65 
Ratio of equivalents of phosphoric acid and fluorine — 
1 : 0-062 
