On animal electricity : being an abstract of the discoveries of Emil Du Bois-Reymond / edited by H. Bence Jones.

Date:
1852
Catalogue details

Licence: Public Domain Mark

Credit: On animal electricity : being an abstract of the discoveries of Emil Du Bois-Reymond / edited by H. Bence Jones. Source: Wellcome Collection.

Provider: This material has been provided by the Royal College of Physicians of Edinburgh. The original may be consulted at the Royal College of Physicians of Edinburgh.

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    form could occur; and in this manner, when placed on the cushions, the decrease of force was still apparent. He has also examined the decrease of the muscular current in the act of contraction, when the current was produced by means of the arti- ficial transverse section instead of the natural one ; the result of the experiment was the same as before. If a muscle be tetanised whilst the cushions are applied to S3nnmetrical points of its longitu- dinal or transverse section, the equilibrium of the needle is not disturbed by the contraction, and if the cushions are applied to unsymmetrical points, either of the longitudinal or of the trans- verse section, so as to have only a weak current in the circuit (p. 90-93), the deflection of the needle at the moment of contraction will also be a weak one. The negative deflection of the needle at the moment of contraction is therefore always proportional to the actual intensity of the cur- rent of the muscle when at rest. In a paper communicated to the French Aca- demy (Annales de Chimie et de Physique,