[ So ] 
ployed was the fame, fo that the differ¬ 
ence in the refult could not be attributed 
to the different quality of the opium, 
neither could it be imputed to its action, 
being more or lefs continued upon the 
parts, as I took care to adopt a common 
fjpace of time for all of them s this was a 
quarter of an hour. 
Experiment LXVIII. 
Opium was introduced betwixt the fibres 
of the triceps of the thigh of a frog, the 
extremities of which were before-hand 
impregnated with the fame folution. This 
frog remained motionlefs, notwithftanding 
my efforts to excite it. 
Experiment EXIX. 
Six other frogs prefented different phe¬ 
nomena. Opium in them neither fuf- 
pended nor weakened the mufcular mo¬ 
tions. 
Experi* 
