( 388 ) 
to anfwer the Defigns of Providence, Of 
the Expectation of human Neceffities. For 
fince we are fatisfied that nothing can pafs 
even the LaCteals but in a fluid Form, much 
lefs could they pierce the fcarf Skin, enter 
both by the Mouths of the excretory DuCts 
of the Skin, and pafs thro’ the very Inter-* 
It ices or Texture of Fibres and Veffels, and 
fo get in and mix with the Blood both ways, 
2. And as the medicinal Parts of thefe Wa- 
ters are fmaller than the groffer Particles 
of Matter themfelves$ the firft will not 
only enter, but enter in greater Quantity 
than the laft, even as a fteamy or dry Va- 
pour $• but that the firft is fmaller than the 
laft, is plain from the Incolligibility and In- 
coercibility of the firft, whereas the laft may 
be both gathered and retained. But the Skin 
of a living human Body is not only more 
thin and porous than that of other Animals, 
becaufe of its Cloathing, but more fp'ongy 
and open than any glafs, metallic, or earthen 
Veftel, which are much clofer than Veffels 
of Wood, yet the volatile or fpirituous Parts 
of mineral Waters are not retainable by the 
firft, and much lefs by the laft ; and if thefe 
volatile Parts make their way through the 
'Pores of the firft Veffels, much more through 
£he Skin of a human Body, which is much 
mors 
