Though the sensibility of our organs is really undiminished, it seems to be lowered in sleep, because then no attention is given to common sensation.
Sleep, however, it should be added, may be either profound, or light, or imperfect; in the two latter cases, the attention seems to be less completely suspended.
So, in sleep, it is the attention alone that really sleeps; the rest of the mental powers and impulses are on the contrary in motion, but free and unchecked, obtaining their refreshment and renovation from gambolling about and stretching themselves. The inspector only slumbers; or, to use a closer figure, he retires to a sufficient distance from them, not to be disturbed by any common noise they may make; any great disturbance calls him back directly; likewise, he sits with his watch in his hand, having a turn for noting the flight of time.
In contrast with the above conception of the states of sleeping and waking, the alternations of which compose our ordinary being, I have now to hold up another conception, resembling the first, of which it is the double,—but vaguer, more shadowy, of larger and gigantic proportions, from its novelty astonishing, like the mocking spectre of the Hartz; which is yet but your own shadow cast by the level sunbeams on the morning mist.
All the phenomena embodied in this conception, I propose to denominate Trance. But let me premise that all do not belong to every instance of trance. If I undertook to specify the external appearances of the human species, I must enunciate among other things, as colours of the skin, white, yellow, brown, black; as qualities of the hair, that it is flowing, soft, lanky, harsh, frizzled, woolly; but I should not mean that every human being presented all these features.
Then, as our ordinary being presents an alternation of sleeping and waking, so does trance-existence. There is a trance-sleep and a trance-waking to correspond with ordinary sleep and ordinary waking.
As natural sleep has different degrees of profoundness, so has trance sleep. They present a latitude so extensive, that it is convenient and allowable to lay down three different degrees or states of trance-sleep.
Then, of trance-sleep first, and of its three degrees.
The deepest grade of trance-sleep extinguishes all the ordinary signs of animation. It forms the condition in which many are buried alive. It is the so-called vampyr state in the vampyr superstition. [See Letter II. of this series.]
The middle grade presents the appearance of profound unconsciousness; but a gentle breathing and the circulation are distinguishable. The body is flexible, relaxed, perfectly impassive to ordinary stimuli. The pupils of the eyes are not contracted, but yet are fixed. This state is witnessed occasionally in hysteria, after violent fits of hysteric excitement.