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poflible to induce any eleCtrical appear¬ 
ances by touching the coating and nerves. 
Under thefe circumftances, the artificial 
electricity at fuch a point as to make the 
cork balls of the electrometer It r ike the 
fides of the glafs with violence, had no 
power over the wings. 
Experiment CXXXVI. 
When the jar was completely charged, 
it did not produce the fmalleft apparent 
effect. 
Experiment CXXXVII. 
I palled a piece of fealing-wax under 
the plexus, in order that the artificial elec¬ 
tricity Ihould aCt with greater energy upon 
the nerves, by not being difperfed upon 
the furrounding parts. The movements 
then took place. But I cannot fay exactly 
how much electricity was employed, as 
the quantity was too great to be meafured 
exaCtly by the electrometer. Mr. 
