OF ARKANSAS. 229 



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 of more than three hundred feet. From the 

 base of one of the cliffs of this sandstone, on Mulberry river, section 30? 

 township 1 1 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- 



