322 Prof. Daubeny on the Moira Brine Springs atid on the 



As my own experiments were limited to ascertaining the 

 proportion of bromine present in the water, I have no right 

 to give an opinion as to which analysis deserves a preference ; 

 indeed, 1 should rather regard the want of correspondence 

 between the two as corroborating an idea I have long enter- 

 tained, that the saline impregnation of mineral springs often 

 undergoes very considerable variation in short intervals of 

 time. 



In the autumn of the year 1828, I examined a mineral water 

 then recently discovered at Willoughby, in Warwickshire, 

 which smelt strongly of sulphuretted hydrogen, and which 

 appeared to contain in the gallon no less than 16*9 cubic 

 inches of that gas. In the April following, by the same me- 

 thod of operating, I could detect only 12*65 cubic inches, a 

 difference which I was then disposed to attribute to the greater 

 dilution of the water by the rains that had fallen during the 

 winter. On reexamining the same spring, however, in Sep- 

 tember of last year, I could discover only 5*2 cubic inches of 

 sulphuretted hydrogen in the gallon, and I am therefore, 

 driven to the conclusion that a difference in point of strength 

 has actually occurred within the period of four or five years. 

 Nevertheless, as even at present the spring appears to be more 

 strongly impregnated with sulphuretted hydrogen than any 

 other in the midland counties, I am glad to take this oppor- 

 tunity of announcing its existence, for the sake of those invalids 

 who may find it inconvenient to resort to Harrogate*. 



The same supposition will account for the entire want of 

 correspondence between the results of my analysis of the 

 Gloucester mineral spring stated in the same paper, and those 

 which had previously been given by Mr. Accum. 



In the case of the Ashby waters it may be remarked, that 

 three analyses have been made ; the first by Mr. Accum, which 



* The saline ingredients of this spring in the gallon, in 1828, were as 



follows : 



Carbonate of lime 5-620 



magnesia 0*175 



Chloride of calcium 1'065 



sodium 5'391 



Sulphate of soda 32-800 



Or, according to Dr. Murray's views, which suppose the ingredients of a 



mineral water to be united in such a manner as to form compounds 



readily soluble ; 



Carbonate of soda 5-965 



magnesia 0-175 



Chloride of calcium 6'110 



Sulphate of lime 0-290 



soda 32-450 



