OF ARKANSAS. 239 
Bi-carbonate of lime. 
Bi-carbonate of magnesia. 
Bi-carbonate of the protoxide of iron. 
This water appears to contain a considerable amount of oxide of iron, 
and it is therefore somewhat remarkable that it should also indicate, with 
acetate of lead, the presence of sulphuretted hydrogen, a combination that 
can only exist when the oxide of iron is held in solution by a free acid. 
This water will have a tonic effect, combined with an action on the 
skin and kidneys. 
At and near Mr. Parker’s spring, is seen the following succession of 
rocks: coarse-grained sandstone, alternating with flagstones, reddish-yel- 
low and gray shales; in all about two hundred feet. In the gray shales, 
ten feet above the spring, there is a thin coal-dirt. 
On Mulberry river, the thick-bedded sandstone of the millstone-grit 
series attains a thickness cf more than three hundred feet. From the 
base of one of the cliffs of this sandstone, on Mulberry river, section 30? 
township 11 north, range 28 west, there issues a saline water, from a fissure 
in the rock, that is known as the State salt spring. This spring has lately 
been given up by the State and is now the property of Messrs. Basham & 
Ward. It contains: 
Chloride of sodium, (common salt). 
Bi-carbonate of lime. 
Bi-carbonate of magnesia. 
Bi-carbonate of the protoxide of iron. 
Sulphates, a trace. 
This is a weak brine, which might become much stronger by deep bor- 
ing, as it occupies the same geological position in which the strongest 
brines are found in the western states. 
There is another saline spring, reported to be of about the same strength, 
situated higher up on Mulberry river, which I did not have an opportunity 
to visit. 
The qualitative chemical examination of a mineral water, on Spirit 
creek, a branch of Mulberry, township 11 north, range 28? west, resulted 
as follows: 
Carbonate of the protoxide of iron (strong). 
Bi-carbonate of lime. 
Bi-carbonate of magnesia. 
This is a good chalybeate water, and its effects will be that of an active 
tonic. 
A chalybeate spring was also examined at Mr. William Ham’s, on Mul- 
