REPORT ON THE DEEP-SEA DEPOSITS. 
439 
37. Globigerina Ooze. — Station 13. 
Lat. 21° 38' N., long. 44° 39' W., 1900 fathoms (Brazier). 
Loss on ignition after drying at 230° Fahr., 
6-63 
. Alumina, r 
Ferric oxide, j ■ ■ • • 
5-86 
Portion 
soluble in Hydrochloric 1 
Acid = 82-14 / 
= - 
Calcium phosphate. 
Calcium sulphate, .... 
Calcium carbonate, .... 
small trace 
0-51 
. 74-50 
.Magnesium carbonate. 
1-27 
Portion 
insoluble in Hydrochloric \ 
Acid=ll-23 f 
_ 
General residue, consisting of soluble silica ) 
with the insoluble silicates, ' 
11-23 
Material at command only 19-60 grains 
; this yielded : — 
100-00 
Loss on ignition. 
1-30 gr. 
Soluble in acid, 
Insoluble ,, 
16-10 
2-20 
19-60 
Portion soluble iii Hydrochloric 
Acid = 90 -82 
Portion insoluble in Hydrochloric ) 
Acid = 4 -60 ) 
38. Globigerina Ooze. — Station 14. 
Lat. 21° r N., long. 46° 29' W., 1950 fathoms (Brazier). 
Loss on ignition after drying at 230° Fahr., 
Alumina, 
Ferric oxide, 
Calcium phosphate, 
Calcium sulphate, . 
Calcium carbonate, . 
Magnesium carbonate. 
Silica, 
Insoluble residue, principally alumina and ferric 
oxide, with silica. 
Note. — Material at command only 24 grains ; this yielded : — 
Loss on ignition, .... 
Soluble in acid, .... 
Insoluble ,, 
4-58 
3- 33 
1-12 
1-20 
79-17 
1-40 
4- 60 
4-60 
100-00 
1-10 gr. 
21-80 ,, 
1-10 ,, 
24-00 
39. Globigerina Ooze. — Station 15. 
Lat. 20° 49' N., long. 48° 45' W., 2325 fathoms (Brazier). 
Portion soluble in Hydrochloric \ 
Acid = 87 -50 / 
Acid=8‘33 
Note. -rrMaterial at command only 12 grains ; this yielded 
Loss on ignition, .... 
Soluble in acid, .... 
Insoluble ,, 
Loss on ignition after drying at 230° Fahi-. , 
' Alumina, 1 
4-17 
6-25 
Ferric oxide, J • ■ • ■ 
Calcium phosphate. 
large trace 
Calcium sulphate, .... 
1-91 
Calcium carbonate, .... 
. 67-60 
Magnesium carbonate. 
2-58 
.Silica, ..... 
9-16 
' Insoluble residue, principally alumina and ferric 
oxide, with silica, 
1 8-33 
100-00 
0- 50 gr. 
10-50 ,, 
1 - 00 ,, 
12-00 „ 
