( 39 ° ) 
has been demonftrated to difcharge a Quan- 
tity equal to its own Weight in 20 Hours. 
Then how vaftly many muft the perfpira- 
tory Dufts or Outlets of that Scruple of Skin 
be? and confequently the Immiffion of the 
volatile mineral Vapours through the Skin, 
from the Water, muft be very confiderable, 
capable of producing very great and furpri- 
ling Alterations in the Body ; which Alte- 
rations will be more fenfible, as the mineral 
Waters are more highly impregnated with 
a volatile mineral Spirit, whofe Admiffion 
into the Body by the cutaneous Pores can- 
not be hindered or prevented by the plenti- 
fulleft Difcharge of perfpirable Matter. 1. 
Becaufe the more vifcid the Matter fhut up 
in the excretory Duds is, the more porous, 
and the more room there is in it to receive 
and lodge the mineral Steam from the Wa- 
ter. 2. Becaufe the more vifcid or fizy Part 
of any Fluid keeps always neareft the Sides 
of the containing Veffel, whiift the more 
fluid, being fitter for and more fufceptive of 
Motion, keep the Axis or Middle of the hol- 
low Cone or Cylinder. Now, feeing neither 
the Force of the Veflels difcharging the per- 
fpirable Matter, nor the Preffure and Weight 
of the Juices of the Body, like fo many Co- 
lumns of a far greater Altitude than the 
Bath, 
