MINERAL WATERS. 
325 
only from the minute quantities of this gas observed in one or 
two of the Cheltenham and Leamington waters, but also from 
the strong impregnation of the spring of Willoughby in 
Warwickshire."* 
Thus, as Dr. Daubeny concludes, the sulphuric acid, acting upon 
the several chlorides, would form with their bases those earthy 
and alkaline sulphates on which their medicinal qualities chiefly 
depend ; whilst the free hydrochloric acid disengaged, attacking 
the calcareous rock?, would give rise to the production of the 
increased quantity of chloride of lime present in them. He adds 
that " there is a general impression that the aperient springs, 
which rise so abundantly from the lias, become weaker when 
long drawn upon, and it is only in this way that I can reconcile 
the extreme discrepancy between the analyses of the same 
spring, at periods not very remote one from the other." 
The following analyses of waters from two of the three spa- 
wells at Gloucester, were made by Mr. George Embrey (1889) ; 
they have been communicated l>y Mr. C. E. Hawkins: 

" Saline Water." 
" Sulphurous 
Water." 
Grains per gallon. 
Grains per gallon. 
Sodium chloride 
1143-45 
464-31 
Calcium sulphate 
7-19 
34-00 
Calcium carbonate 
32 22 

Magnesium sulphate 

21-33 
Magnesium carbonate - 
38-58 
3-23 
Iron oxide - - 
01 
Trace. 
Bromine and Iodine 
Traces. 

Combined water aiA loss 
31-55 27-13 
1253-00 
550-00 
Traces of Free and Albuminoid Ammonia were found. 
The third well is said to yield a strongly ferruginous water. 
The saline water obtained from a well at St. Clement's, Oxford, 
will be referred to more particularly in the volume dealing with 
the waters obtained from the Oolitic strata. 
The Shearsby Spa in Leicestershire originates from a spring 
about half mile from Shearsby, on the road to Bruntingthorpe. 
The water rises through the Lower Lias clap, and probably, like 
the Cheltenham waters, it derives its main ingredients from 
saliferous Triassic marl?. The following analysis by Mr. R. 
Hnytou Davis, has been published by Mr. J. D. Paul : t 
* Rep. Brit. Assoc. for 1830, pp. 13, 19. 
f Trans. Leicester Lit. and Phil. Soc., ser. 2, Part III., p. 9. 
