t C"7) 
mation of (b coofiderabie as well as ufeful a part of 
Anatomy, might be acceptable to the Publick at this 
time. And to reader his particular Enquiries more in- 
telligible; thofe Mufcles which have cot been taken no- 
tice of by others, are not only delineated , but thofe 
i| alfo, which are not well expreft in the Figures of re- 
faliusy Cajferim^ and thofe of B'tdloo^ aod others. And . 
to the end the Defcriptioo of eadi Mufcle fiiould be the 
better underftood, by fo (mail a Valume, he has added 
two Figures of the Skeleton ; to which references are 
made in defer ibing the Origine, Progtefs, and Infer tion 
. of each Mufcte. 
I - In the Introdudion, an Account is given of the in- 
' timate Strudureof a Mufcle; where, he obferves (by 
the affiftance of a Microfcope) that each fingle Fleiliy 
Fibre is much fmaller than the fineft Hair; that it's of 
a Cylindrical Figure, aod that it's fubftance is corapofed 
of divers Cells: He fuppofes each Cell to be diftinft, 
and that it has one Apperture only into the Extremity of 
I the Blood- Veflel ; from which Struflure, divers P^^- 
nomena may be explained, as by often injeding of fair 
Water into the Arteries of a dead Animal, why the 
, Mufcles are fooner tumified than other Parts, and why 
I they are excited to aSt when fuch Injections are made 
foon after Death ; as alfo, why the Mufcles entertain 
I more Blood in them ( as appears by their colour ) than 
divers other Parts ; as the Brain^ Pancreas^ &c. whofe 
Number and Magnitude of Blood- Veflels exceed thofe 
jof the Mufcles: Hence, he luppofes the Blood, barely 
JasaFIuid, to be an affiftant in the Contradion of a 
j Mufcle, and that it is the weight by which its Aftion is 
I performed j which, he imagines, may happen two man- 
Iner of ways ; either by a Turgefcence began in th^ Pa- 
j rietes oi the Cells in the Fleftiy Fibres, caufed by the 
Contents of the Nerves when agitated ad Imperium 
lAnim^e^ or by a Coarftation of the Veins, whereby the 
refluent 
