ANIMAL ELECTRICITY. — 23 
On 
ExPERIMENT IX, 
I pAsseEp the tinfoil around portions of the fkin, the mufcles, 
the inteftines, and around the femoral blood-veffels of frogs, 
without obferving convulfions produced, when the tinfoil was 
applied to the filver by means of the brafs-wire. 
EXPERIMENT X. 
I Lar bare the fciatic nerve in the back part of the thigh of 
_a young rabbit, and inclofed it in tinfoil, and then applied the 
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 {pinal marrow, and then, with a brafs-wire 
held in my hand, | prefled the tinfoil again to the filver, and 
_ kept it applied for a few feconds, which occafioned convuliions 
fo quickly repeated, that the leg became rigid. Immediately 
thereafter, the mufcles 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 ann QUERIES. 
From the accounts we have received of the experiments of 
Dr Gatvani and Dr Vatu, it appears, that both thefe cele- 
brated authors have fuppofed, ‘‘ That the circulation of the 
“ nervous fluid from the nerves to the mufcles, is nearly fimilar 
“ to the circulation of artificial eleGtricity in the Leyden phial ; 
Gg2 “ and 
