of sea waters, in different parts of the ocean, &c. l 97 
contained in 500 parts of this water, and estimated in their 
uncombined state, are as follows : 
It now remains to estimate, from the above data, the com- 
pound salts contained in the water, according to their most 
probable state of combination as before explained ; and to 
infer the quantity of soda belonging to the same portion of 
the water, a question which cannot well be ascertained by a di- 
rect process. This will be effected in the following manner. 
Muriate of lime is known to consist of 51 partsi of lime, to 
49 of muriatic acid.* Therefore the above 0.314 gr. of lime 
= 0.302 of muriatic acid = 0.616 gr. muriate of lime, free 
from water. 
Sulphate of soda, in its dry state, consists of 56 parts acid, 
to 44 soda ;-f and therefore the above 1.27 gr. of sulphuric 
acid = 1.01 soda = 2.33 grs. dry sulphate of soda. 
Muriate of Magnesia, in a state of dryness, consists of 38.0 9 
parts of muriatic acid, to 44.91 of magnesia. £ Therefore the 
1.08 of magnesia are equivalent to 1.497 of muriatic acid 
(41.91 : 58.09 : : 1.497 ) == 2 .577 of dry muriate of magnesia, 
in 50c grs. of the water. 
* Scale of Chemical Equivalents. 
t Scale of Chemical Equivalents ; and ioo parts of crystallized sulphate of soda 
consists of, sulphuric acid 24.5 ; soda 19.5 ; water 56. The above 2.33 grs. therefore 
would amount to 5.3 grs. crystallized sulphate of soda. 
1 Scale of Chemical Equivalents. 
Muriatic acid, 
Sulphuric acid 
Lime, - 
Magnesia, 
8 grs. 
1.27 
0.314 
1.08 
