ANIMAL ELECtRICflTr. 235 



Experiment IX. 



I passed the tinfoil around portions of the fkin, the rnufcles, 

 the inteftines, and around the femoral blood-vefTels of frogs, 

 whhoutobferving convul -Ions produced, when the tinfoil was 

 applied to the filver by means of the brafs-wire. 



Experiment X. 



I laid bare the fciatic nerve in the back part of the thigh of 

 a young rabbit, and inclofed it in tinfoil, and then applied tbe 

 tinfoil, by means of a brafs wire, repeatedly to a half-crown 

 piece, laid on the table, and obferved convulfions of the leg 

 produced on each application. I after that cut tranfverfely the 

 lower part of the fpinal marrow, and then, with a brafs-wire 

 held in my hand, 1 prefled the tinfoil again to the filver,. and 

 kept it applied for a few feconds, which occasioned convulsions 

 fo quickly repeated, that the leg became rigid. Immediately 

 thereafter, the rnufcles were relaxed, and their contractile power 

 feemed to be exhaufted, as repeated applications of the tinfoil 

 to the filver produced no farther motion of the limb. 



REMARKS and QJJERIES. 



From the accounts we have received of the experiments of 

 Dr Galvani and Dr Valli, it appears, that both thefe cele- 

 brated authors have fuppofed, " That the circulation of the 

 " nervous fluid from the nerves to the rnufcles, is nearly iimilar 

 1 to the circulation of artificial electricity in the Leyden phial j 



G g 2 '* and 



s* 



