REPORT ON THE COMPOSITION OF OCEAN-WATER. 
137 
The corrections of the numbers for lime, soda, and total salts per 55 '42 of chlorine, 
which are necessitated by the new lime -determinations, might be effected as shown on 
page 21 ; but, when we do this, there still results a value for the alkalinity which is by 
(P00293 too high. This surplus I ascribe to a constant positive error in the “ total 
sulphates,” which practically means the soda. Hence we had better discard the direct 
determinations of the soda, and calculate it from the number of equivalents of acid left 
unsaturated by lime, magnesia, and potash; i.e., from the difference: number of [Cl 2 ’s, 
S0 3 ’s, C0 2 ’s] minus number of [CaO’s, MgO’s, K 2 0’s]. 
To correct the “chlorine” for the bromine included in it, we have (page 101) for the 
bromine present per 100 of chlorine 0'3402 part ; hence per 55’420 parts of chlorine, we 
have 0T885 part of bromine =0‘001178 x 160 part. Whence the quantity of chlorine 
really is 55'336, so that the numbers stand as follows : — 
Per “ Chlorine ” = 
Sulphuric Acid, 
Carbonic Acid, . 
Lime, 
Magnesia, 
Potash, . 
Soda (by difference), 
55'420-h 70-92 = 0-78144 1 
6-415-^80 =0-08019 1 
0452 -r 44 =0-00345 j 
Total, . 0-86508 J 
1 -677 -f- 56 =0-02995 -j 
6'214 - 40 =0-15535 ' 
1-333^-94 =0-01418 
= 0-19948 - 
41-267 -r 62 =0-66560 I 
I 
Total, 0-86508 J 
True Chlorine, . . . 55 -336 
Bromine, . . 0-1885 
Oxygen-equivalent of the two 
halogens, . . . -12'503 
100-0795 
Number of equivalents 
of acid radicals. 
Number of equivalents 
of basic radicals. 
Referring to 100 parts of total salts we have 
Chlorine, ..... 55 - 292 
Bromine, ..... 04884 
Sulphuric Acid, . . . . 6-410 
Carbonic Acid, .... 0452 
Lime, . . . . . L676 
Magnesia, ..... 6-209 
Potash, ..... L332 
Soda, ..... 41-234 
— [O] per [Clj. or Br 2 ], . . . —12-493 
(puts. chem. chall. exp. — part i.— 1884.) 
100-0004 
A 18 
