[ 18 ] 
concerned in that A&ion : For that, in order to a due 
Contra&ion, if it was made in the flefhy Fibres, they 
muft of Neceffity be much more fhorten’d than the 
intire Mufcle itfelf; becaufe they are not difpofed 
according to the longitudinal Direction of the Muf- 
cle, but are inferted obliquely into the Tendons : 
And alfo that the Mufcle would fwell to an immenfe 
Size; which, he fays, does not happen upon mufcu- 
lar Motion. Hence he concludes, that the Motion 
is performed by the membranous Fibrill <e ; which, 
being contracted, draw the fkfhyTibres more clofely to- 
gether, and render the whole Mufcle (hotter and more 
hard. 
XXIV. 
It is remarkable, that in Plate 3. Fig . 2. of this 
Author, the Figure he gives to reprefent the Situation 
of the fiefhy Fibres, and the Fibrill# that interfect: 
them, is copied by Dr. Stuart-, Plate 2. Fig. 2. with 
this Difference, that Mayow calls the minute inter- 
fering Fibres, membranous Fibrill# ; whereas the for- 
mer calls them nervous white Fibrill # * ; and, in 
his third Figure, fuppofes each carnous red Fibre to 
have a Chain of Veficles , which reprefent a String 
of Beads or Necklace . Now, as to thefe Vejicles , 
our Author feems to have given the Hint to fome of 
thofe 
Thefe are no more than the Fibres of the Membrane that invefts 
the mufcular Fibres mention’d by Steno, and which really exift; for, 
in tearing afunder, with one’s Fingers, the Fibres of a boiled Mufcle, 
they are very apparent; and feem to be what Bernouilli imagines to 
bind his flefhy Fibres at equal Internodes, of which more hereafter, 
being firft thought of by this Author, ( Mayovj ) as Agents in mufcular 
Motion, 
