(3») 
Thirdly, By confidering the Solid of 
every part 5 to which thofe adhere chief¬ 
ly, who by attributing to each part its 
forme, do intimate that they acknowledg 
there to be fomething proper, which yet 
is unknown to us 5 and which according 
to that kno'viedge of mattet that we 
have hitherto obtained, can he nothing 
elfe but a Porous furface of that Solid, 
and. a fubtile Fluid permeating thofe 
pores. 
I ihould too much wander from my 
fubjeft, if I fliould apply the things, 1 
have dilcours’d of,to what daily happens 
in our Body, and cannot be rationally ex-^ 
plicated otherwife. It may be fufficient 
ro have hinted here, that the Particles, 
which do many Ways part from the ex* 
ternal Fluid, are carried into the internal 
Fluid, by the means of Percolation 5 
whence bping likewife varioufly fever’d, 
and by a.new cribratlon tranfmilted into 
the Appropriate internal Fluid, they are 
added to the folid parts, cither by way 
of Fibres,or Parenchyma's, according as 
they fhall have been determin'd by the 
to us yet unknown propriety of every 
part,included in the confideration of the 
three 
