[ 6 ] 
Regius , and Dr. Scarborough , he endeavours to found 
his Rcafoning upon Mechanical Laws, in accounting 
for Mufcular Motion; and lays it down as a princi- 
pal Maxim, That the Motion of every Mufcie is be- 
gun by a certain fpirituous Liquor palling from the 
Nerves ; but is accomplifhed, or finifhed by two other 
necefiary Caufcs which fucceed it. He defpairs that any 
one can ever arrive at the Knowledge of the Man- 
ner in which the Soul aftsupon the Body, and there- 
fore avoids troubling himfelf about it ; but produces 
many Reafons to fhew, that whatever it is that gives 
Motion to the Mufcles, mull necefl'arily pafs by 
the Nerves. This leads, him to inquire into the 
Sttufture of a Nerve ; which, he fays, “ Is com- 
“ pofed of a certain medullary Subftance full of 
“ juice, with a double Membrane which involves 
“ that Subftance,- and alfo an infinite Number of 
u little Cords within thefe Membranes and medul- 
4£ lary Subftance, extended from their Beginning to 
“ the very extreme Capillaments”, which are db 
fperfed and inferted into the Parts of the Mufcie. 
X. 
But Dr. Crouve refers to it himfelf as his own, in a Paper, p. 25, 
intituled, An Hypothefs of tbs Structure of a Mufcie, and the Rea- 
Jo;i of its Contraction. [Read in the Surgeons Theatre , anno 1694, 
1695]. This (fays Profeffor Ward ) is the Subftance, or Heads only, 
of the DoTor’s D'fcourfes upon that Subjedt, publillted by Mr. Hook , 
in his Phi/ofophical Collections , Num. 1 x , Se6t. 8. P. 22. ; which, being 
afterwards tranflated into 'Latin, was inferted in the Ada Eruditorum 3 
anno 1682, p. 194. with the Title De Motu Mujculorum. See that 
learned Authors Lives of the Profejfors of Grelham - College, 
p. 323. 
