L 17 ] 
perhaps it might have been occafioned by 
fome unobferved fridlion upon the furface. 
Experiment VIII. 
Another moufe fattened alive upon a 
table by means of pins, was ttrongly con- 
vulfed, not only in the part which I had 
prepared, but all over the body, and par¬ 
ticularly in the tail. It foon died, but the 
movements continued for three quarters 
of an hour. 
Experiment IX. 
A rat did not exhibit any movement 
whatever, nor could I perceive any alter¬ 
ation in its hair. 
Experiment X. 
I prepared all the feet of a tortoifei 
they all moved forcibly, but flowly, fimilar 
to the natural motion of that animal; this 
motion continued for two hours, but at 
the laft, I was obliged to make intervals 
C of 
