is ftronger than the known quantity of five, 
fix, feven, or eight degrees of artificial 
electricity. Might we not by this means 
eftablifh a common meafure? Let this 
be fubmitted to the confideration of phi- 
lofophers. 
The impediment which both animal 
and artificial electricity experience under 
the circumflances we have noticed, is 
owing to the approximation of the coats 
of the nerves. The coats of the nerves, 
then, are bad conductors. 
There exifts in nerves a fubftance which 
appears well adapted for conducting elec¬ 
tricity, and this is the medullary pulp 
itfelf. As this pulp is of extreme deli¬ 
cacy, I imagined, that by making it 
undergo fome alteration, fome changes 
might be produced in its conducting 
power. This idea determined me to 
make the following experiments. 
