Observations on animal electricity : in explanation of the metallic operation of Doctor Perkins / by John Vaughan, M.P.M.S. ; fellow of the Medical Society of Delaware.

  • Vaughan, John, 1775-1807.
Date:
1797
Catalogue details

Licence: Public Domain Mark

Credit: Observations on animal electricity : in explanation of the metallic operation of Doctor Perkins / by John Vaughan, M.P.M.S. ; fellow of the Medical Society of Delaware. Source: Wellcome Collection.

Provider: This material has been provided by the National Library of Medicine (U.S.), through the Medical Heritage Library. The original may be consulted at the National Library of Medicine (U.S.)

    19/36
    with two of Mr. Fowler's experiments, in his. own words: EXPERIMENT I. I divided, (fays he) the fciatie nerve of one leg, and tied the crural artery of the other in a large frog. Scarcely anv blood was loft in doing either. Two days after this, I ftrang- led it. During the firft twenty-four hours, the leg in which the nerve had been divided, ap- peared to contract with the moft vigour; after this perio I, the difference between them became more doubtful; but the contractions were at no time ltronger in the leg whofe artery was tied, than in that whofe nerve was divided. EXPERIMENT 2. *' The fame operations were performed on a large female frog full of fpawn. Four hours afterwards me was covered by a male, who had been treated in a fimilar manner. I men- tion this cireumfiance, as it tends to prove, that the pain occasioned by the operation, was pro- bably not fo great as to produce much fallacy. On the day following, fhe had fpawned, and on the fixth day from the operation fhe was itrangled. When laid upon a plate of zinc, and excited by means of a rod of hlver, the contractions were found extremely feeble in the leg whofe artery had been tied, and ceafed altogether in about twenty-four hours after her death. Q