AS FAR back as I remember myself (with interest, with amusement, seldom with admiration or disgust), I have been subject to mild hallucinations. Some are aural, others are optical, and by none have I profited much. The fatidic accents that restrained Socrates or egged on Joaneta Darc have degenerated with me to the level of something one happens to hear between lifting and clapping down the receiver of a busy party-line telephone. Just before falling asleep, I often become aware of a kind of one-sided conversation going on in an adjacent section of my mind, quite independently from the actual trend of my thoughts. It is a neutral, detached, anonymous voice, which I catch saying words of no importance to me whatever—an English or a Russian sentence, not even addressed to me, and so trivial that I hardly dare give samples, lest the flatness I wish to convey be marred by a molehill of sense. This silly phenomenon seems to be the auditory counterpart of certain praedormitary visions, which I also know well. What I mean is not the bright mental image (as, for instance, the face of a beloved parent long dead) conjured up by a wing-stroke of the will; that is one of the bravest movements a human spirit can make. Nor am I alluding to the so-called muscae volitantes—shadows cast upon the retinal rods by motes in the vitreous humor, which are seen as transparent threads drifting across the visual field. Perhaps nearer to the hypnagogic mirages I am thinking of is the colored spot, the stab of an afterimage, with which the lamp one has just turned off wounds the palpebral night. However, a shock of this sort is not really a necessary starting point for the slow, steady development of the visions that pass before my closed eyes. They come and go, without the drowsy observer’s participation, but are essentially different from dream pictures for he is still master of his senses. They are often grotesque. I am pestered by roguish profiles, by some coarse-featured and florid dwarf with a swelling nostril or ear. At times, however, my photisms take on a rather soothing flou quality, and then I see—projected, as it were, upon the inside of the eyelid—gray figures walking between beehives, or small black parrots gradually vanishing among mountain snows, or a mauve remoteness melting beyond moving masts.
On top of all this I present a fine case of colored hearing. Perhaps “hearing” is not quite accurate, since the color sensation seems to be produced by the very act of my orally forming a given letter while I imagine its outline. The long a of the English alphabet (and it is this alphabet I have in mind farther on unless otherwise stated) has for me the tint of weathered wood, but a French a evokes polished ebony. This black group also includes hard g (vulcanized rubber) and r (a sooty rag being ripped). Oatmeal n, noodle-limp l, and the ivory-backed hand mirror of o take care of the whites. I am puzzled by my French on which I see as the brimming tension-surface of alcohol in a small glass. Passing on to the blue group, there is steely x, thundercloud z, and huckleberry k. Since a subtle interaction exists between sound and shape, I see q as browner than k, while s is not the light blue of c, but a curious mixture of azure and mother-of-pearl. Adjacent tints do not merge, and diphthongs do not have special colors of their own, unless represented by a single character in some other language (thus the fluffy-gray, three-stemmed Russian letter that stands for sh, a letter as old as the rushes of the Nile, influences its English representation).
I hasten to complete my list before I am interrupted. In the green group, there are alder-leaf f, the unripe apple of p, and pistachio t. Dull green, combined somehow with violet, is the best I can do for w. The yellows comprise various e’s and i’s, creamy d, bright-golden y, and u, whose alphabetical value I can express only by “brassy with an olive sheen.” In the brown group, there are the rich rubbery tone of soft g, paler j, and the drab shoelace of h. Finally, among the reds, b has the tone called burnt sienna by painters, m is a fold of pink flannel, and today I have at last perfectly matched v with “Rose Quartz” in Maerz and Paul’s Dictionary of Color. The word for rainbow, a primary, but decidedly muddy, rainbow, is in my private language the hardly pronounceable: kzspygv. The first author to discuss audition colorée was, as far as I know, an albino physician in 1812, in Erlangen.