I 
REPORT ON THE DEEP-SEA 
DEPOSITS. 
459 
Silica, .......... 50-85 
Peroxide of iron, ......... 24‘40 
Alumina, . . . . . . . . . . 8'92 
Protoxide of iron, . . . . . . . , . 1 '66 
Lime, . . . . . . . . . . . 1‘26 
Magnesia, . . . . . . . . . .3-13 
Potash, . . . . . . . . . . 4'21 
Soda, . . . . . . . . . 0 '25 
Water, .......... 5‘55 
Manganese, .......... trace 
100-23 
Note. — This substance contained 15 per cent, of white, pale grey, and yellow casts, 35 per cent, pale green casts, 45 per 
cent, of dark gi-eeu particles, together with 5 per cent, of mineral particles and siliceous organisms (J, M.). 
86. Glauconite. — Station 164b. 
Lat. 34° 13' S., long, 151° 38' E., 410 fathoms (Sipocz). 
I. 0-7312 grm. of substance, fused with the carbonates of soda and potash, gave 0-0416 grm. of water, 0-3788 
grm. of silica, 0'1896 grm. of peroxide of iron, 0'0634 grm. of alumina, trace of manganese, 0-0093 
grm. of lime, and 0'0618 grm. of pyrophosphate of magnesia = 0-02227 grm. of magnesia. 
II. 0-6828 grm. of substance, treated with hydrofluoric and sulphuric acids, gave 0‘0450 grm. of the chlorides 
of potash and soda, 0-1367 grm. of chloroplatinate of potash, corresponding to 0-0417 grm. of chloride 
of potash = 0-02634 grm. of potash, and 0'0033 grm. of chloride of soda = 0-00175 grm. of soda. 
III. 0-3205 grm. of substance, treated with hydrofluoric and sulphuric acids, required for oxidation 0-85 c.c. 
permanganate of potash (1 c.c. permanganate of potash = 0-0058355 grm. of protoxide of iron), corre- 
sponding to 0-00496 grm. of protoxide of iron. 
Silica, . . . . . . . . .51-80 
Peroxide of iron, . . . . , . . . .24-21 
Alumina, . . . . . . . . . .8-67 
Protoxide of iron, . . . . . . . . .1-54 
Lime, . . . . . . . . . . .1-27 
Magnesia, . . . . . . . . . .3-04 
Potash, , . . . . . . . . . 3-86 
Soda, , . . . . . . . .0-25 
Water, . . . . . . . . . .5-68 
Manganese, .......... trace 
100-32 
Note. — This substance contained 10 per cent, of white, pale grey, and yellow casts, 25 per cent, of pale green casts, 60 per 
cent, of dark green casts, together with 5 per cent, of mineral particles and siliceous organisms ( J. M. ). 
87. Glauconite. — Station 164b. 
Lat. 34° 13' S., long. 151° 38' E., 410 fathoms (Sipocz). 
I. 0-7543 grm. of substance, fused with the carbonates of soda and potash, gave 0-0435 grm. of water, 0-4147 
grm. of silica, 0-1777 grm. of peroxide of iron, 0-0626 grm. of alumina, trace of manganese, 0'0098 grm. 
of lime, and 0 0575 grm, of pyrophosphate of magnesia = 0-02072 grm. of magnesia. 
II. 0-7413 grm. of substance, treated with hydrofluoric and sulphuric acids, gave 0-0432 grm. of the chlorides 
of potash and soda, 0-1292 grm. of chloroplatinate of potash, corresponding to 0-0394 grm. of chloride 
of potash= 0-0249 grm. of potash, and 0-0038 grm. of chloride of soda = 0-0020 grm. of soda. 
III. 0-2987 grm. of substance, treated with hydrofluoric and sulphuric acids, required for oxidation 1 c.c. 
permanganate of potash (1 c.c, permanganate of potash = 0-0058355 grm. of protoxide of iron), corre- 
sponding to 0-0058355 grm. of protoxide of iron. 
