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قراءة كتاب Experiments on the Nervous System with Opium and Metalline Substances Made Chiefly with the view of Determining the Nature
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Experiments on the Nervous System with Opium and Metalline Substances Made Chiefly with the view of Determining the Nature
been tied or cut.
6. After the Limb of a living Animal has been amputated, frequent Convulsions of the same Muscles may be excited by applying Mechanical or Chemical Stimuli to its Nerves; whereas Electrical Matter discharges itself suddenly.
Hence I conclude,
1. That the Fluid, which, on the application of Metalline Bodies to Animals, occasions Convulsions of their Muscles, is electrical, or resembles greatly the Electrical Fluid.
2. That this Fluid does not operate directly on the Muscular Fibres, but merely by the Medium of their Nerves.
3. That this Fluid and the Nervous Fluid or Energy are not the same, but differ essentially in their Nature.
4. That this Fluid acts merely as a Stimulus to the Nervous Fluid or Energy.
5. That these Experiments have merely shown a new mode of exciting the Nervous Fluid or Energy, without throwing any farther or direct Light on the nature of this Fluid or Energy.
FINIS.
FOOTNOTES:
[1] See Edin. Phys. Ess. Vol. III.
[2] See Edin. Phys. Ess. Vol. III.
[3] See Observations on the Nervous System, 1783, Chap. x. and xi.
[4] See Fontana sur les Poisons, 1781, p. 267.
[5] See Fontana, p. 293.
[6] Fontana, p. 244.
[7] Fontana, p. 259.
[8] Fontana, p. 112. p. 259.
[9] Fontana, p. 142.
[10] Edin. Phys. Ess. published in 1771, p. 363.
[11] Very small portions of different metals, applied as above described, have astonishing effects; and although I have found that large portions of the metals produced convulsions, when smaller had failed, or that they produced stronger convulsions; yet the effects are by no means proportioned to the weight of the metals employed, nor to the extent of their surfaces which are suddenly brought into contact. In most of my Experiments, I employed a plate of Zinc, about five inches long, three inches broad, and about one-third of an inch thick; and a gold Probe, somewhat thicker and longer than the Probes Surgeons commonly use.
[12] See Dr Fowler's Book, p. 85.
[13] After reading to the Royal Society, on the 3d of June, an account of this Experiment, which I had made in the beginning of May, I found, from an ingenious publication of my Pupil Dr Fowler, which I received that evening, that the same Experiment had been performed by him.
TRANSCRIBER'S NOTES:
—Obvious print and punctuation errors were corrected.
—The transcriber of this project created the book cover image using the title page of the original book. The image is placed in the public domain.