( 395 ) 
not diflfolvable in common Water; dry, 
powder, and levigate either the firft or laft, 
as fubtily as poffibly you can ; then examine 
both through a fine Microfcope, and their 
Particles will appear larger than the Blood 
Globules ; and the Diameter of one of the 
largeft and firft Water Globules of Blood, 
exceeds not one two-thoufandth Part of an 
Inch ; and the Diameter of any Particle vi- 
fible to the naked Eye, mu ft not exceed one 
hundredth Part of an Inch ; but Lewenhoek 
and others have difcovered an Infinity of 
Vefiels in the Body, whofe Diameter exceed 
not one 80000 th Part of an Inch. Since there- 
fore there are Vefiels whofe Diameters are fo 
inconceivably lefs than the Blood Globules, 
and the fineft levigated Subftances are fo 
much larger than the Blood Globules, it 
both is and was abfolutely neceflary, that 
the more medicinal Parts of mineral Waters 
fiiould be thus minute and fine, that they 
might not only pafs, but even penetrate, 
from without, the delicate Tubes in the 
Body, and adt upon their Fluids. Now 
the Difeafes in which natural hot Baths are 
found moft remarkably ferviceable, are fuch 
as are exadtly adapted to this Dodtrine. 
viz. Univcrfal Palf)\ with Lofs of Senfe and 
Motion, or only lofs of one ; Numbnefs , 
Weaknefs 
