- ( H° ) 
I obferved thefe Appearances, not ordyjn one, but all, 
the Mufcles I directed, efpecially in fuch as. bad not been 
long out of the Water. 
Thefe Mufcles don’t lye fingle, but are at leaff three' 
double on one another, and are corapofed of longilh’ 
Fibres 5 and each Fibre has on both fides an nnconceiv-* 
able number of moving Particles. Thefe Fibres are not 
extended length-ways, but in breadth, and each of them 
is provided with a great many Joints 5 infomucb, that 
I have been able to count 25 Joints in one of them, in 
the broadeft part of the Membrane $ and they lay as 
regularly and joyned one with another, as.ycu may have 
obfervM in the little Bones that fhoot out on both fides 
of the Bjck Bone of a Fifla. 
I placed a fmall Particle of the afore-mentioned 
Membrane before a Microfcope: And tho’ that Particle 
was net the hundredth part fo big as a common Grain 
of Sand, yet I difeoyer’d fuch a vaft number of Moti- 
ons in the faid fmall Particle that was broken off from 
the Membrane, that it is incredible to any body but 
thofe that have feen it : And thofe Motions were not 
only Circular, but I could difeover at leaft 50 (lender 
Particles in the length $ which appear’d through the, 
Microfcope’ of equal fize to 6 Hairs breadth, and the 
thicknels of one Hair, as they appear to the naked Eye: 
And thefe Motions continued lo long, till our Eyes 
were weary of viewing them 5 but as- Toon as the moi- 
ffure of the Mufcle, in which the faid Particle lay, was 
evaporated, the Motions were ended. The exceeding 
fmall Particles that lay round about, were put into fuch 
a Motion, that one would have taken them for little 
living Creatures. 
1 have endeavoured for feveral Years to difeover the 
Ovarium, or Egg-Neft, in the Mufcles j and now lately, up- 
on the 1 8th of November , there was a Prefent made me 
of exceeding fine and well tafted Mufcles 3 fome of 
r , j which 
