ee Ber ty 
Springs at Lemington Priors. 209 
acid with the sediment itself, and continuing the 
boiling till the mass is become dry: the salt may 
then be procured by lixiviating the dry mass, and 
crystallizing the solution. 
XVII. 
Neither sulphat of argill nor oxygenated muriat 
of mercury are at all decomposed by this water. 
XVIII, THE METALLIC SALTS, 
All the appearances which demonstrate the exist- 
ence of peculiar metallic salts in the waters of the 
new baths are also to be found in this, as the oxy- 
dation and solution of metals and a copious preci- 
pitate by galls, while the prussiat of potash is not 
affected: (1v.) and the same experiments were re- 
peated to shew the presence of the oxygenated salts of 
iron and manganese (v. vi1. &c.) with the same re- 
sult, and authorize the same conclusions. Still, I be- 
lieve, there is some difference in regard to these salts 
between the two waters. 1. I have already observed 
(xv11.) two points of distinction; and, as the second 
of those experiments is probably an indication of 
sulphur, this water seems to be without it. This is 
confirmed by evaporating the water ina silver vessel 
to which it communicates no stain. However, . 
2. its action on copper is very strong, so that, if it 
be boiled in a copper vessel for a long time, a blue 
oxyd of copper is separated from the vessel. But 
VOL. Vv. cc 
