What, then, are these results, regarded as shedding light on this intricate subject? We refer only to one the most obvious which we have already cited above. Let us repeat and analyze, and, if practicable, show the principle evolved. There was, on various occasions, the solution of soda injected into the veins at the temperature from 105° to 120° Fahr.: a higher temperature could not be borne. This process was performed slowly, thirty minutes being occupied in injecting the ten pints. Now mark the result as the operation proceeds. Says Dr. Aiken, "After the introduction of a few ounces, the pulse, which had ceased to be felt at the wrist, became perceptible, and the heat of the body returned." Mark the language: "only a few ounces" were required to arrest for the time being, the progress of the disease and restore warmth to the body; a very remarkable fact, replete with instruction, as will appear as we proceed. Again says the Dr., "by the time three or four pints had been injected the pulse was _good_, the cramps had ceased, the body, that could not be heated, had become warm, and instead of cold exudation on the surface, there was a general moisture. The voice, before hoarse and almost extinct, was now natural; the hollowness of the eye, the shrunken state of the features, the leaden hue of the face and body had disappeared; the expression had become animated, the mind cheerful, the restlessness and uneasy feelings had vanished; the vertigo and noises of the ear, the sense of oppression at the precordia, had given way to comfortable feelings; the thirst, however urgent before the operation, was assuaged, and the secretion of urine restored, though by no means constantly so." Such is the astonishing result obtained by this experiment, and this, too, when only three or four ounces had been injected--all the urgent symptoms mitigated and relieved. What, we ask, could have been more satisfactory, or better calculated to aid the discovery of an important truth? Every distinctive and fatal symptom for the time is relieved, and the normal condition and functions of the system restored; a result which could only have been obtained by the evolution of a principle of sufficient promptness and power and diffusibility to arrest and utterly suspend for a time the force of this disease.