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new red marl, a formation known to be rich in Alkaline Chlorides. 
This being the case we have a fair starting point for the 
comparison. 
The Chlorine and Sodium show the greatest difference, that for 
the Batheaston water being 964 and 476. For the King’s Bath 
280 and 129 respectively. 
There is one peculiarity about these figures which I must call 
your attention to, which is that they increase in the same ratio. 
Observe that the Chlorine of the King’s Bath is a little more than 
double the sodium there ; in the other water the same ratio will 
be noticed, viz., 476 to 964. I think there is a fair amount of 
evidence to presume that the large excess of Alkaline Chlorides is 
gained by the mineral water in passing through the red marl ; the 
other constituent parts can be shown to have a remarkably 
intimate connection with those of the King’s Bath and may be 
compared thus (I will run them down in the order as they occur 
on the paper) Calcium, King’s Bath 377, Batheaston water 261 ; 
here is a difference of 30 per cent., likely to be owing to lime 
thrown down through loss of Carbonic Acid given up in the 
underground passage from the old mine to the brook where the 
water was collected. In Magnesium there is a gain of 20 per 
cent., probably taken up in the red marl. Strontium, slight 
traces apparent in both waters. The Sodium we have accounted 
for. Potassium 28 in the one, 39 in the other ; showing a close 
resemblance. Of Lithium, there are traces in both waters. Iron, 
this metal is much smaller in amount, but as in both it exists as 
carbonate, the small quantity 1:5 parts per million is probably 
_ due to loss of Carbonic Acid as in the case of the Lime. The 
Chlorine has been referred to. Sulphuric Acid much about the 
same 958 parts to 869 parts in the King’s Bath. Silicie Acid, 
though showing a larger difference, in both the amount is small. 
The combined Carbonic Acid, 82 to 86, we may call these figures 
nearly similar. Lastly, the solid Residue, the large excess of 
Alkaline Chlorides will account for the difference found here, 
a 
