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The effect of the treatment appeared at once in soft, voluptuous sighs of relief, deep and long-drawn; in the magnetic showers of the body I recognised a sure token which that mysterious disorder in the veins, lymphs, and nerves reveals in the ganglia. A firm pressure of the biceps with full fist, a pressure of the thumb against the rhomboideus, made her exclaim, "Oh, that has done me good!"
Paralytic symptoms are manifested early in the disease, and the animal may fall when moving about. They soon present a gaunt, emaciated appearance. In dogs the diagnosis is confirmed by a microscopical examination of the vagus ganglia and that portion of the brain known as Amnion's horn, and the finding of Negri bodies in the nerve-cells.
To kings and their ministries have been added, in England, other great directive centres, exercising a control which, at first small, has been gradually becoming predominant: as with the great governing ganglia which especially distinguish the highest classes of living beings.
Moreover, judging from the greater extent and variety of faculty he exhibits, we may infer that the civilized man has also a more complex or heterogeneous nervous system than the uncivilized man: and, indeed, the fact is in part visible in the increased ratio which his cerebrum bears to the subjacent ganglia, as well as in the wider departure from symmetry in its convolutions.
The other organs with which we breathe and circulate the blood would be essential; so also would the liver; but at least half of the intestines might be dispensed with, and of course all of the limbs. And as to the nervous system, the only parts really necessary to life are a few small ganglia.
Legs are being formed or moulded into jaws, the anterior segments are fusing into a head, and their ganglia into a brain; an external skeleton is developing. Furthermore the increase of the muscular and nervous systems must be accompanied by increased powers of digestion, respiration, and excretion. Practically the whole body is being recast.
Now when the intellect takes upon itself to meddle with such things, a learned professor may explain that a certain musical note is composed of vibrations so many thousand per second which are communicated to particles of matter in suspension in the air and carried by them to the tympanum of the ear, which acts thus-and-so upon the various components of the hearing apparatus, and finally arrives through a system of ganglia to a certain nerve centre, located somewhere in a brain cell, or the spinal column.
The largest are the three thoracic ganglia and the eleventh. After ascertaining these facts, I remembered Swammerdam's investigations into the grub of the Monoceros, our Oryctes nasicornis. I consulted the venerable volume.
The slayer knows better than we do, when she sticks the Bee under the chin. The cerebral ganglia are reached through the little hole in the neck and death ensues immediately. The relation of these acts of brigandage cannot satisfy my distressing habit of following each reply obtained with a fresh question, until the granite wall of the unknowable rises before me.
For some remarks on the action of the Sphex, and for Darwin's opinion on the matter, see Romanes' Mental Evolution in Animals, pp. 299-303. The sureness of instinct. It is not doubtful that a sure inherited instinct conducts the Sphex to prick its victim in the situation of the nervous ganglia, which will be wounded in the act.
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