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times, or oftener, as they find necessary. The whole is concluded with a gentle purge, tho' the waters themselves are of a laxative nature.
There is another spring in the town of the same nature, but not so warm, as the Brudel: it is called the Mill-spring, and is only tepid. Those of a warm or weak constitution make use of this instead of the other, both for drinking and bathing.
There are likewise several chalybeat springs in the neighbourhood of Carlsbad; one at half a mile, and the other at two leagues distance from the town. Both of them seem to resemble the water of the Pohun spring at Spa; but are not near so strong. They do not use them medicinally on the spot; but they are brought to Carlsbad, and sold, in order to be drank with their wine. I am,
Grosvenor-street,
Jan. 19th, 1757.
My Lord,
With the greatest respect,
Your Lordship's
Most humble Servant,
Read Jan. 27,
1757SOME time last autumn I had occasion to draw up a few examples on the use of a table of the specific gravities and weights
