[ 23 1 
fill’d with Particles of Water as with Wedges, as 
it appears in a wet Rope. He feems to be further 
confirm’d in this Notion, becaufe he obferved, in 
the Fibres of a Piece of dry d Ham , certain fsngui- 
neous Particles, or itrait and tranfverfe Filaments, 
difperfed like Porphyry or Marbles which, fays he, 
feems not poffible to be fo, if the internal Subftancc 
of the Fibres were not fpungy. 
XXX. 
From his Notion of this fpungy Contexture of the 
internal Subftatiee of a mufcular Fibre, he is led fur- 
ther to tnid'f'me-, that it confifts of Pores of a rhornbo- 
idal Figure, fo as to refcmble a Chain of Rhombus s, 
which are capable of Contraction like fo many Bows, 
by the Help of the moving Faculty a, and that each 
of thefe Mackinulte , or rhomboidal Pores of the 
flefhy Fibres, are fo minute, that their Length does 
not exceed the twentieth Part of ail Inch. Hence 
his Definition of a Mufcle is, that its Texture is like 
a reticular Bundle, compofed of rhomboidal Chains 
contiguous to each other. 
XXXI. 
A Nerve, he fays, is a Bundle or Capillament formed 
of a Number of fibrous Threads, connected together 
by a membranous Binding; and that every Fibre may 
be hollow like a Blood- veil'd, altho’, from the Imper- 
fection of our Sight, they may feem folid : Yet, if it 
be not impoflibie* that tncy may be Tubes, he had 
rather believe them little Tubes fill’d with a moifi 
fpungy Subfiance analogous to green Elder, or the 
