[ 26 3 
natural Situation. Thus every moving cylindrical 
Fibre, by the Help of this Ligature, is divided into 
equal Internodes , forming Vehicles, which are flaccid 
when the Mufcle is inactive, but when afting, are 
diflended, acquiring an oval Figure like the Rings 
of a Chain, which, fays our Author, Borelli falfeiy 
calls Rhomboidal MachinuLe : And alfo adds, that 
thefe tranfverfe Ligatures are loofe enough to admit 
a free Communication for the moving Matter to fill 
the Veficks, 
XXXVI. 
His third Se&ion is chiefly taken up in the Con : 
futation of Stews Opinion, That mufcular Motion 
is perform’d without the Accefs of any thing what- 
foever, but by the foie Difpolition in the Fibres to 
change their Figure, from an oblique-angular Paral- 
lelogram into a more ftraitone j and oppofes to it that 
common phyflcal Axiom, “ Omne quod movetur , 
movetur ab alio.” And, in the fourth Seftion, aflents 
to Dr. Croune , with Mayow , IVillis , and Borelli 
that Motion mud be caufed by a Fermentation raifed 
in the Mufcle ^believing alfo with the latter, that the 
Nerves are a Congeries of Tubes fill’d with a fpungy 
Subftance, which are always full of a very fpirituous 
Juice, fupplied by the Brain, of fuch a Nature, as 
Fibre, ferve only to keep them in their natural Situation ; but that 
they divide them thus into Bladders at equal Internodes, we mult 
deny ; inafmuch as we have been fo happy as to feparate diftineffc 
mufcular Fibres, and demonftrate them before tfie learned Roybal 
Society , and to many Anatomifts fince thefe Ledlures were read. For 
their proper Defcription, fee Lett. z. Sett. 3, 4, <&c. Tab. I . Fig. 1. &c. 
