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beates, may be quite fpoiled ; but if it is a 
Water of no Eminence, and feveral others 
of the fame fort near it, we have an Op- 
portunity to be informed of the whole im- 
pregnating Principles, which may give great 
Light into others of the fame Kind. 9. We 
know whether mineral Waters, whofe Vir- 
tue refides chiefly in the volatile Parts, are 
injured much by Rains, for then they will 
vary in their Temperature with the Air. 
10. We fee the Hurt done to Cold Baths, 
by bringing them from the Spring to the 
Refervoir in a Pipe, Gutter, or Channel, 
after they are come to the Day; or of 
making two Baths, an inner and an outer, 
from the fame Spring of common Water ; 
or of letting the Bath lie open to the Air, 
which fhould be covered with fome Shelter 
or Houfe. Thus old Parkwell , or Blind- 
bird Well near Worjburgh , the Spirits in the 
Spring were two Degrees low T er in the outer 
Bath, though the Day was not hot. Barn - 
Jley Bath raifes the Spirits in the Thermo- 
meter three Degrees and a half higher than 
the Spring ; Acworth Bath the fame ; but 
fuch as have a clofe Houfe immediately 
over them, lofe not above one Degree, as 
Litchfield , Willowbridge , &c. All perennial 
1 briflc 
