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We must irritate it to make it give the shock. This action in the torpedos, as well as in the gymnoti, is a vital action; it depends on the will only of the animal, which perhaps does not always keep its electric organs charged, or does not always employ the action of its nerves to establish the chain between the positive and negative poles.
To be aware of the difference that exists between the sensation produced by the Voltaic battery and an electric fish, the latter should be touched when they are in a state of extreme weakness. The gymnoti and the torpedos then cause a twitching of the muscles, which is propagated from the part that rests on the electric organs, as far as the elbow.
Almost frantic with apprehension of the result if she could not be checked, every gun that would bear was turned upon her, and torpedos were exploded in her pathway by electricity. All these she treated with the silent contempt they merited from so invulnerable a monster. At length, as she reached a good easy range of the fort, her bow struck something, and she swung around as if to open fire.
If the gymnoti were not known, we might suppose, from the observations made on torpedos, that fishes cannot give their shocks from a distance through very thick strata of water, or through a bar of iron, without forming a circuit. Mr.
The Mediterranean contains, according to M. Risso, four species of electrical torpedos, all formerly confounded under the name of Raia torpedo; these are Torpedo narke, T. unimaculata, T. galvanii, and T. marmorata. The torpedo of the Cape of Good Hope, the subject of the recent experiments of Mr. They became stronger on galvanizing the animal by the contact of zinc and gold.
Volta admits that the discharges of the opposite electricities in the torpedos and the gymnoti are made by their own skin, and that when we touch them with one hand only, or by means of a metallic point, we feel the effect of a lateral shock, the electrical current not being directed solely the shortest way. Mr.
The Cartilaginous fishes here brought together include the varieties of the ray; torpedos; and sharks.
This hope will be easily realized if they succeed in procuring anew living gymnoti in some one of the great capitals of Europe. The discoveries that will be made on the electromotive apparatus of these fish, much more energetic, and more easy of preservation, than the torpedos,* will extend to all the phenomena of muscular motion subject to volition.
We are told by Scribonius Largus, Galen, and Dioscorides, that torpedos cure the headache and the gout.
These abundant precautions, and the telegram from General Lee, found in Fort Fisher, stating that unless that stronghold and Fort Caswell were held he could not hold Richmond, give some idea of the importance of the place to the Rebels. We passed groups of hundreds of sailors fishing for torpedos, and saw many of these dangerous monsters, which they had hauled up out of the water.
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