NARRATIVE OF THE CRUISE. 
1037 
The insoluble residue consisted apparently of amorphous silica. 
The part soluble in hydrochloric acid seemed to be a mixture of — 
Phosphate of lime (Ca,2P0 4 ), 
Carbonate of lime (CaC0 3 ), 
Fluoride of calcium (CaF 2 ), 
Binoxide of manganese (MnO.,), 
Ferric oxide (Fe 2 0 3 ), 
and minor constituents. 
60 '0 per cent, of the whole 
9-4 
1-4 
1-6 
4-8 
substance, 
Ratio of equivalents of phosphoric acid, carbonic acid, and fiuorine- 
(F 2 0 5 ) 
1 
(C0 2 ) 
0T62 
(F 2 ) 
0-037 
In the recent whale’s bone (No. 8) we found : — 
1 0-162 : nil. 
No. 5. Portion of a Whale’s Bone much impregnated with Manganese. 
Station 286 ; 2335 fathoms, South Pacific. 
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, prepared for analysis, and 
used for the following determinations : — 
Moisture, ........ 2 - 87 
Phosphoric acid (P 2 0 5 ), ...... 29-13 P231 
Fluorine (F 2 ), ....... l - 44 0-076 
Lime (CaO), . . . . . . , . 36 -05 1-287 
Parts 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. 
The outer manganiferous portion of this specimen was completely analysed, with the 
following results : — 
