NARRATIVE OF THE CRUISE. 
1039 
The bulk of the part soluble in acids apparently consists of hydrated sesquioxides of 
manganese and iron and decomposible silicates. 
Portion “ 3. (3).” 
Insoluble in acid, . 
Moisture, 
Combined water (H 2 0), 
Phosphates of iron and alumina,* 
Phosphoric acid (P 2 0 5 ),* 
Carbonic acid (C0 2 ), 
Fluorine 1 -4 = (F 2 - 0), 
Sulphuric acid (S0 3 ), 
Chlorine, 
Lime (CaO), 
Magnesia (MgO), . 
Alkalies and loss, . 
White Siliceous looking Core. 
£ 
0-06 
2-21 
2-22 
0-42 
. . . . 34-13 1-4420 
6-61 0-3042 
0-81 0-0736 
0-81 
trace 
49-85 1-7801 
0-77 0-0385 
2-11 
100-00 
Ratio of equivalents of phosphoric acid, carbonic acid, and fluorine — 
(ip 2 0 5 ) (C0 2 ) (F 2 ) 
1 : 0-211 : 0-051 
The following specimens were only partially analysed. 
No. 4. Portion of Beak of a Ziphius. 
Station 286 ; 2335 fathoms, South Pacific. 
The body of the specimen looked pretty much like recent bone, but had veins of 
manganese running through it. The outer coating of the specimen was black. 
Found in 100 parts of the inner portion — 
Moisture, . . . . . . . . . 1 - 14 
Combined water (H 2 0), . . . . . . . .2-78 
Carbonic acid (C0 2 ), ....... 6 -81 
Phosphoric acid (P 2 0 5 ),t ........ 33-30 
Fluorine (F 2 ), ......... l - 65 
Ratio of equivalents of phosphoric acid, carbonic acid, and fluorine — 
1 : - 0-220 : 0-062 
* Total phosphoric acid found = 34-33 per cent. 34-13 phosphoric acid found = 74-5 per cent, tricalcic phosphate, 
t Equal to 72‘69 per cent, tricalcic phosphate. 
