( «<?t ) 
aeration of Animals, and the Seeds of Plants - nor yet 
thofe that I have made upon the Mufcles and Muf- 
cular Fibres of different Animals, forafmuch as the 
Mufcles of Fillies are not provided with any Ten- 
dons. On this occafion, I have lately examin’d a- 
new the Mufcles of the Cod-fifb, upon which 1 have 
made the following Obfervations. 
After the late Difcoveries I had made of the fmall; 
VefTels in the Mufcular Fibres of the Whale, the Ox, 
the Sheep, and the Moufe, 1 was apt to imagine, that 
the fame Fabrick would hold in the Mufcular Fibres 
of Fifh likewife: but as this could not be certainly 
concluded, having at that time in my houfe a part of 
a freQi Cod, I cut off a piece of the Fifh, with Intent 
to examine it with my Microfcope fome Days after- 
ward. 
This piece of Fifh I cut into fmall Slices, fome ac- 
cording to the length of the Fibres, and others di- 
redly acrofs them, in order to obferve, whether 
thefe Mufcular Fibres were compofed of great Num- 
bers of fmall. VefTels running according to the length, 
of the Fibre., And in effed I found, that, when I 
had cut the Fibres dexteroufly through, there ap- 
pear’d in the Microfcope as great a number of fmall 
VefTels running along thefe Fibres, as I had former- 
ly feen in the Mufcular Fibres of a Whale.. 
But what appear’d to me the mod remarkable, was, 
that in a great number of Fibres, in which I was' 
not able to difcover any VefTels running according to> 
their length, I obferved abundance of fmall VefTels, 
which Teemed to me to proceed from the Membranes 
encompafting the Fibres. For in one Fibre thefe Vef- 
fels appear’d to come out of the Circumference, or 
circular Tunicle of the Fibre, and to pafs on to the 
oppofite 
