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The two roots blend together within the spinal cavity to form a single nerve trunk, which passes out between the vertebræ. On the dorsal root of each spinal nerve is a small ganglion which is named, from its position, the dorsal-root ganglion. *Double Nature of Spinal Nerves.*—Charles Bell, in 1811, made the remarkable discovery that each spinal nerve is double in function.
He is also a chemist of considerable eminence, and I suppose in the subtle and complex jungle of riddles that centres about the ganglion cell and the axis fibre there are little cleared places of his making, little glades of illumination, that, until he sees fit to publish his results, are still inaccessible to every other living man.
As the fulness of the conscious mental existence of a man stands to the subconscious activities of an amoeba or of a visceral ganglion cell, so our reason forces us to admit other possible mental existences may stand to us.
There must therefore be an isolated ganglion in front and two ganglia, close to each other, about two-fifths of an inch back. Dissection confirms this forecast completely. It shows us three fairly bulky thoracic ganglia, arranged in the same manner as the legs. The first which actuates the fore-legs, is placed opposite their roots. It is the largest of the three.
The snail represents the average result of the experiment. It can crawl, but that is about all; it is neither swift nor energetic. Even the earthworm can outcrawl it. It has feelers and eyes, and is thus better provided with sense-organs than almost any worm. It has a supra-oesophageal ganglion of fair size.
It transfers its voice and its fire to the great hypogastric plexus, which governs, with the help of the sacral ganglion, the flow of urine through us, but which also voices the deep swaying of the blood in sex passion. Sex is our deepest form of consciousness. It is utterly non-ideal, non-mental. It is pure blood-consciousness.
Here was the Holy of Holies, the nerve ganglion of the English Navy, and here, striding up and down, the man who could jab the nerve-centre with his finger whenever he pleased. He often pleased. Then he would gloat over the pins as they skipped about the maps. Chief Inspector Dawson was announced, and stood to attention. "Ha!" cried the First Lord, "so you are Dawson, the Master of Spies.
By way of a main entrance, it has a great open square, the Place de Jaude, the clanging ganglion of its tramway system, about which are situated the municipal theatre and the chief cafes, and from which radiate the main arteries of the city.
It had no plan, no intention; it meant nothing at all. And the other great empires adrift, perilously adrift like marine mines, were in the self-same case. Absurd as a British cabinet council must seem to you now, it was no whit more absurd than the controlling ganglion, autocratic council, president's committee, or what not, of each of its blind rivals. . . . Section 2
Sprinkled through its substance were seen irregular bodies that had taken on a beautiful color, while the matrix in which they were embedded remained unstained. In a word, the central nerve cell had sprung suddenly into clear view. A most interesting body it proved, this nerve cell, or ganglion cell, as it came to be called.
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