REPORT ON 
THE DEEP-SEA DEPOSITS. 
461 
Silica, .......... 47-60 
Peroxide of iron, . . . . . . . . . 5 '92 
Alumina, . . . . . . . . . 17-09 
Manganous oxide, . . . . . . . . 0-43 
Lime, , . . . . . . . . . 3-20 
Magnesia, . . . . . . . . . 1-24 
Potash, , . . . . . . . . . 4-81 
Soda, ... ...... 4-08 
Water! 
I Loss on Ignition, 
90. Phillipsite. — Station 275. 
Lat. 11° 20' S., long. 150° 30' W., 2610 fathoms (Sipocz). 
101-11 
I. 0-5411 grm. of substance, after drying 30 hours at 125° C., lost 0-0506 grm. of water and gave 0-0398 
grm. of loss on ignition, and then fused with the carbonates of soda and potash, gave 0-2699 grm. of silica, 
0-0300 grm. of peroxide of iron, 0-0894 grm. of alumina, 0'0026 grm. of manganoso-manganic oxide 
= 0'0024 grm. of manganous oxide, 0 0075 grm. of lime, and 0-0180 grm. of pyrophosphate of magnesia 
= 0-0065 grm. of magnesia. 
II. 0-4115 grm. of substance, treated with hydrofluoric and sulphuric acids, gave 0-0690 grm. of the chlorides 
of potash and soda, 0-1091 grm. of chloroplatinate of potash, corresponding to 0-0333 grm. of chloride 
of potash = 0-0210 grm. of potash, and 0-0357 grm. of chloride of soda = 0-0189 grm. of soda. 
Silica, 
Peroxide of iron. 
Alumina, 
Manganous oxide. 
Lime, 
Magnesia, 
Potash, 
Soda, 
Water 
{ 
at 125° a, . 
Loss on ignition. 
49-88 
5-54 
16-52 
0- 44 
1- 38 
1-20 
5-10 
4-59 
9-33 1 
7-35/ 
16-68 
91. Phillipsite. — Station 275. 
101-33 
Lat. 11° 20' S., long. 150° 30' W., 2610 fathoms (Renard). 
I. 0-7228 grm. of substance, after drying 10 hours at 125° C., lost 0-0575 grm. of water and gave 0-0685 grm. 
of loss on ignition, and then fused with the carbonates of soda and potash, gave 0-3520 grm. of silica, 
0’0446 grm. of peroxide of iron, 0-1271 grm. of alumina, 0-0123 grin, of lime, 0-0208 grm. of pyrophos- 
phate of magnesia = 0-0074 grm. of magnesia. 
II. 0-75479 grm. of substance, treated with hydrofluoric and sulphuric acids, gave 0-1112 grm. of the chlorides 
of potash and soda, 0-1879 grm. of chloroplatinate of potash, corresponding to 0-0579 grm. of chloride 
of potash = 0'0365 grm. of potash, and 0-0533 grm. of chloride of soda = 0-0283 grm. of soda. 
Silica, 
Peroxide of iron. 
Alumina, 
Lime, . 
Magnesia, 
Potash, 
Soda, 
Water ! 
at 125° 0., . 
Loss on ignition. 
48-70 
6- 17 
17-58 
1-70 
1-02 
4-83 
3-75 
7- 95 
9-47 
}l7 
■42 
101-17 
