REPORT ON THE DEEP-SEA DEPOSITS. 
427 
6. Red Clay. — Station 10. 
Lat. 23° 10' N., long. 38° 42' W., 2720 fathoms (Brazier). 
Portion soluble in Hydrochloric 
Acid = 58 '98 
Portion insoluble in Hydrochloric 
Acid = 33 -41 
} 
Loss on ignition after drying at 230° Fahr. , 
7-61 
p Alumina, 
9-73 
Ferric oxide. 
9-30 
Calcium phosphate. 
. 
-{ Calcium sulphate, . 
0-61 
Calcium carbonate, , 
. 13-30 
Magnesium carbonate. 
1-31 
Silica, 
. 24-73 
(-Alumina, 
5-50 
1 Ferric oxide. 
2-96 
-j Lime, 
0-23 
j Magnesia, 
0-19 
t Silica, 
. 24-53 
100-00 
7. Red Clay. — Station 18. 
Portion soluble in Hydrochloric t 
Acid = 60'00 ) 
Portion insoluble in Hydrochloric 
Acid = 32 '25 
Qg. 55° 13' W., 2650 fathoms (Brazier). 
Loss on ignition after drying at 230° Fahr., 
7-75 
Y Alumina, 
8-25 
Ferric oxide. 
. . » 
. 11-37 
Calcium phosphate, 
. . « 
0-42 
^ Calcium sulphate, . 
0-52 
Calcium carbonatCT . 
. - . 
. 15-78 
Magnesium carbonate. 
1-41 
Silica, 
. . . 
. 22-25 
( Alumina, 
7-00 
1 Ferric oxide, 
2-50 
j Lime, , 
0-57 
j Magnesia, 
0-38 
i Silica, 
. 21-80 
100-00 
8. Red Clay. — Station 19. 
Lat. 19° 15' N., long. 67° 47' W., 3000 fathoms (Brazier). 
Portion soluble in 
Acid = 56 ‘47 
Portion insoluble in 
Acid = 36 '09 
Hydrochloric 
} 
Hydrochloric 
} 
Loss on ignition after drying at 230° Fahr., . 7 '4 4 
C Alumina, . . . . . . 12’91 
Ferric oxide, . . . . . 10‘33 
Calcium phosphate, .... trace 
-< Calcium sulphate, . . . . . 0’96 
Calcium carbonate, . . . . . 1 "49 
Magnesium carbonate, . . . . 3'10 
4, Silica, . . . . . . 27-68 
(-Alumina, . . . . . . 7'81 
j Ferric oxide, . . . . - . 1 ‘57 
Lime, . . . . . . 1'03 
Magnesia, . . . . . , 0‘52 
bSilica, ...... 25-16 
100-00 
