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concerning the nature and virtues of thefe, and fe- 
veral other mineral waters. 
W. Brownrigg, 
Whitehaven, i8 May, 1765.. 
( 
• . Explanation of Tab. VII. 
Eig. I. A Frontiniac vial filled with Pouhon water, , 
with a bladder and’ fpiral wire fitted there- 
to, as defer ibed Exp. ii.. 
Fig. 2. Another of the fame vials placed in a ciftern, , 
in an inverted pofition, as related Exp. iii. 
Fig.. 3. A glafs receiver, of a cylindric form, fixed 
over the ciftern (AA) in an inverted fitua- 
tion, fo as to remain full of water, until 
air is transferred into it, from the vial (B), , 
or from other veffels, for the ufes men- 
tioned in Exp. iv. and v. 
Fig. 4.. A board, of a femicircular . form, fitted to 
the top of the ciftern (AA), with circu- 
lar holes, and niches, for the vials, and 
receivers ufed in the lafl-mentioned expe»- 
riments. . 
H.h 2. 
Extrooi 
