I must have slept for a long time. I was only wakened when I had reached the last light sleep which dissolves of itself, and it must have been very light, for it was an almost inaudible whistling noise that wakened me. I recognized what it was immediately; the small fry, whom I had allowed far too much latitude, had burrowed a new channel somewhere during my absence, this channel must have chanced to intersect an older one, the air was caught there, and that produced the whistling noise. What an indefatigably busy lot these small fry are, and what a nuisance their diligence can be! First I shall have to listen at the walls of my passages and locate the place of disturbance by experimental excavations, and only then will I be able to get rid of the noise. However, this new channel may be quite welcome as a further means of ventilation, if it can be fitted into the plan of the burrow. But after this I shall keep a much sharper eye on the small fry than I used to; I shall spare none of them.
As I have a good deal of experience in investigations of this kind the work probably will not take me long and I can start upon it at once; there are other jobs awaiting me, it is true, but this is the most urgent. I must have silence in my passages. This noise, however, is a comparatively innocent one; I did not hear it at all when I first arrived, although it must certainly have been there; I must first feel quite at home before I could hear it; it is, so to speak, audible only to the ear of the householder. And it is not even constant, as such noises usually are; there are long pauses, obviously caused by stoppages of the current of air. I start on my investigations, but I can't find the right place to begin at, and though I cut a few trenches I do it at random; naturally that has no effect, and the hard work of digging and the still harder work of filling the trenches up again and beating the earth firm is so much labor lost. I don't seem to be getting any nearer to the place where the noise is, it goes on always on the same thin note, with regular pauses, now a sort of whistling, but again like a kind of piping. Now I could leave it to itself for the time being; it is very disturbing, certainly, but there can hardly be any doubt that its origin is what I took it to be at first; so it can scarcely become louder, on the contrary, such noises may quite well — though until now I have never had to wait so long for that to happen — may quite well vanish of themselves in the course of time through the continued labors of these little burrowers; and apart from that, often chance itself puts one on the track of the disturbance, where systematic investigation has failed for a long time. In such ways I comfort myself, and resolve simply to continue my tour of the passages, and visit the rooms, many of which I have not even seen yet since my return, and enjoy myself contemplating the Castle Keep now and then between times; but my anxiety will not let me, and I must go on with my search. These little creatures take up much, far too much, time that could be better employed. In such cases as the present it is usually the technical problem that attracts me; for example, from the noise, which my ear can distinguish in all its finest shades, so that it has a perfectly clear outline to me, I deduce its cause, and now I am on fire to discover whether my conclusion is valid. And with good reason, for as long as that is not established I cannot feel safe, even if it were merely a matter of discovering where a grain of sand that had fallen from one of the walls had rolled to. And a noise such as this is by no means a trifling matter, regarded from that angle. But whether trifling or important, I can find nothing, no matter how hard I search, or it may be that I find too much. This had to happen just in my favorite room, I think to myself, and I walk a fair distance away from it, almost halfway along the passage leading to the next room; I do this more as a joke, pretending to myself that my favorite room is not alone to blame, but that there are disturbances elsewhere as well, and with a smile on my face I begin to listen; but soon I stop smiling, for, right enough, the same whistling meets me here too. It is really nothing to worry about; sometimes I think that nobody but myself would hear it; it is true, I hear it now more and more distinctly, for my ear has grown keener through practice; though in reality it is exactly the same noise wherever I may hear it, as I have convinced myself by comparing my impressions. Nor is it growing louder; I recognize this when I listen in the middle of the passage instead of pressing my ear against the wall. Then it is only with an effort, indeed with great intentness, that I can more guess at than hear the merest trace of a noise now and then. But it is this very uniformity of the noise everywhere that disturbs me most, for it cannot be made to agree with my original assumption. Had I rightly divined the cause of the noise, then it must have issued with greatest force from some given place, which it would be my task to discover, and after that have grown fainter and fainter. But if my hypothesis does not meet the case, what can the explanation be? There still remains the possibility that there are two noises, that up to now I have been listening at a good distance from the two centers, and that while its noise increases, when I draw near to one of them, the total result remains approximately the same for the ear in consequence of the lessening volume of sound from the other center. Already I have almost fancied sometimes, when I have listened carefully, that I could distinguish, if very indistinctly, differences of tone which support this new assumption. In any case I must extend my sphere of investigation much farther than I have done. Accordingly I descend the passage to the Castle Keep and begin to listen there. Strange, the same noise there too. Now it is a noise produced by the burrowing of some species of small fry who have infamously exploited my absence; in any case they have no intention of doing me harm, they are simply busied with their own work, and so long as no obstacle comes in their way they will keep on in the direction they have taken: I know all this, yet that they should have dared to approach the very Castle Keep itself is incomprehensible to me and fills me with agitation, and confuses the faculties which I need so urgently for the work before me. Here I have no wish to discover whether it is the unusual depth at which the Castle Keep lies, or its great extent and correspondingly powerful air suction, calculated to scare burrowing creatures away, or the mere fact that it is the Castle Keep, that by some channel or other has penetrated to their dull minds. In any case, I have never noticed any sign of burrowing in the walls of the Castle Keep until now. Crowds of little beasts have come here, it is true, attracted by the powerful smells; here I have had a constant hunting ground, but my quarry has always burrowed a way through in the upper passages, and come running down here, somewhat fearfully, but unable to withstand such a temptation. But now, it seems, they are burrowing in all the passages. If I had only carried out the best of the grand plans I thought out in my youth and early manhood, or rather, if I had only had the strength to carry them out, for there would have been no lack of will. One of these favorite plans of mine was to isolate the Castle Keep from its surroundings, that is to say, to restrict the thickness of its walls to about my own height, and leave a free space of about the same width all around the Castle Keep, except for a narrow foundation, which unfortunately would have to be left to bear up the whole. I had always pictured this free space, and not without reason, as the loveliest imaginable haunt. What a joy to lie pressed against the rounded outer wall, pull oneself up, let oneself slide down again, miss one's footing and find oneself on firm earth, and play all those games literally upon the Castle Keep and not inside it; to avoid the Castle Keep, to rest one's eyes from it whenever one wanted, to postpone the joy of seeing it until later and yet not have to do without it, but literally hold it safe between one's claws, a thing that is impossible if you have only an ordinary open entrance to it; but above all to be able to stand guard over it, and in that way to be so completely compensated for renouncing the actual sight of it that, if one had to choose between staying all one's life in the Castle Keep or in the free space outside it, one would choose the latter, content to wander up and down there all one's days and keep guard over the Castle Keep. Then there would be no noises in the walls, no insolent burrowing up to the very Keep itself; then peace would be assured there and I would be its guardian; then I would not have to listen with loathing to the burrowing of the small fry, but with delight to something that I cannot hear now at alclass="underline" the murmurous silence of the Castle Keep.