I must adduce some observations and experiments from the many I have made on this subject. It may be objected that if animals in their spontaneous perception personify the object in question, they would give signs of this fact with respect to all the objects with which they come in contact, and among which they live, and yet they remain indifferent to many of them, which is a proof that they distinguish the animate from the inanimate. In fact it cannot be disputed that a vast number of the phenomena and objects of nature are regarded by animals with indifference; they are perceived by them, but it does not appear that they suppose these things to be endowed with life. It is, however, necessary in the first place to distinguish two modes and stages in this animation of things, one of which we may term static, and the other dynamic. In the first instance, the sentient subject remains tranquil at the very moment when he vivifies the phenomenon or the thing perceived; while the act is accomplished with so much animating force, and with an implicit and fugitive consciousness, it exerts no immediate and sudden influence on the perceiving animal, and consequently he gives no external signs of the personifying character of his perception. In the second instance, which we have termed dynamic, that is, when the phenomenon or object has a direct and sudden effect on the animal himself, he expresses by his movements; gestures, cries, and other signs, how instantaneously he considers and feels the object in question to be alive, for he behaves in exactly the same way towards real animals.
Animals are accustomed to show such indifference towards numerous objects that it might be supposed that they have an accurate conception of what is inanimate; but this arises from habit, from long experience, and partly also from the hereditary disposition of the organism towards this habit. But if the object should act in any unusual way, then the animating process which, as we have just said, was rendered static by its habitual exercise, again becomes dynamic, and the special and permanent character of the act is at once revealed. We have experience of this fact in ourselves, although we are now capable of immediately distinguishing between the animate and the inanimate, and man alone has, or can have, a rational conception of what are really cosmic objects or things. Yet if we suddenly and unexpectedly see some object move in a strange way, which we know from experience to be inanimate, the innate inclination to personify it takes effect, and for a moment we are amazed, as if the phenomenon were produced by deliberate power proper to itself.
I have kept various kinds of animals for several years, in order to observe them and try experiments at my convenience. I have suddenly inserted an unfamiliar object in the various cages in which I have kept birds, rabbits, moles, and other animals. At first sight the animal is always surprised, timid, curious, or suspicious, and often retreats from it. By degrees his confidence returns, and after keeping out of the way for some time, he becomes accustomed to it, and resumes his usual habits. If then, by a simple arrangement of strings already prepared, I move the object to and fro, without showing myself, the animal scuttles about and is much less easily reconciled to its appearance. I have tried this experiment with various animals, and the result is almost always the same.
In the cage of a very tame thrush, I made a movable bottom to his feeding trough, so arranged that by suddenly pulling a cord, the food which it contained could be raised or lowered. When everything remained stationary in its place the thrush ate with lively readiness, but as soon as I raised the food he nearly always flew off in alarm. When the experiment had been often repeated, he did not like to come near the feeding trough, and—which is a still stronger proof that he imagined the food itself to be endowed with life—he often refused to approach, or only approached in fear the sopped bread which was placed outside the trough. I tried the same experiment with other birds, and nearly always with the same result.
On another occasion I repeatedly waved a white handkerchief before a spirited horse, bringing it close to his eyes; at first he looked at it suspiciously and shied a little, but without being much discomposed, and I continued the experiment until he became accustomed to its ordinary appearance. One day I and a friend went out driving with this horse, and I directed a man, while we were passing at a moderate pace, to wave the same handkerchief, attached to a stick, in such a way that his person on the other side of the hedge was invisible. The horse was scared and shied violently, and even in the stable he could not see the handkerchief without trembling, and it was difficult to reconcile him to the sight of it. I repeated the experiment with slight variations on other horses, and the issue was always more or less the same.
Again, I placed a scarecrow or bogey in a parti-coloured dress in the spacious kennel of a hound while he was absent from it. When the dog wished to return to his kennel, he drew back at the sight of it, and barked for a long while. After going backwards and forwards, snuffing suspiciously, he decided to enter, but he remained on the threshold of the kennel, anxiously inspecting the bogey. In a few days, however, he became accustomed to it, and was indifferent to its presence. I ought to add that I had taught him on the first day, by punishment and admonition, that he must not destroy the bogey. One day when the dog was lying down I violently moved the puppet's arms by a cord, and he jumped up and ran barking out of the kennel, soon returning to bark as he had done at first. Finally, he again became accustomed to it, but whenever I repeated the movement with greater violence, it took a long while for him to become reconciled to it.
I put into a room various kinds of wild birds, which had been taken in nets after they were full grown. The window, which looked upon a garden, was unglazed, and closed by a wire netting, through which the outer air entered and was constantly renewed. I placed in the middle of the room a pot containing a shrub of some size, on which the birds used to perch. Since they had been reared in the open air they were certainly accustomed to the wind, and to the way in which it moves trees and branches, so that they were not alarmed by a phenomenon which they recognized from experience. I fastened a cord to the head of the shrub which I passed through a hole in the door, making another to look through, and in this way I moved it to and fro as the wind might have done. One day when there was a high wind which could be heard in the room, and when the current of air through the window was perceptible, I tried the experiment when the conditions of resemblance were perfect. And yet when the violent movement and oscillation of the shrub was combined with the noise of the wind, the frightened birds all fluttered about, and after repeating the movement, and then allowing it to subside, they kept away from the shrub and did not dare to settle on it.
At another time, aided by an ingenious young friend, I constructed a toy windmill, of which the vanes were moved by weights. I placed this toy in a cage, so arranged that its motions could be regulated from the outside, and I put into the cage a sparrow, which had been taken from the nest, and which consequently had no experience of the external world. Much patience was needed, since the toy required careful adjustment and was easily thrown out of gear, but I managed it at last. The sparrow pecked at the little mill as soon as he was put into the cage, and he grew up accustomed to its motions. I then took the sparrow out of the cage and put in a finch, which had also been taken from the nest, but was reared far from such a machine, and he was frightened and did not reconcile himself to it for some time. I exchanged this bird for a goldfinch which had been caught after he was full grown, and his alarm at the little mill was so great that he did not dare to move.
In a ground floor room which I used as my study, I hung an old sheet, which reached to the ground, on a long spear inserted in a heavy wooden disk; I surmounted it with a ragged hunting cap, and so arranged the sheet as to give it some resemblance to the human form. When my dog came in as usual, he looked suspiciously at the object, snuffing about and gradually approaching to walk round and observe it. At last he was satisfied, and curled himself up by the skirts of the bogey, where I had placed the mat on which he was accustomed to lie when he was with me. One evening when the moon shone doubtfully and there was just light enough to distinguish the outline of things, I carried the shapeless bogey into the garden near my room, and placed it among some shrubs and bushes. I went back to the house and called my dog, who followed me quietly until he reached the spot from which he could see the bogey distinctly enough for him to recognize its identity with the one with which he was already familiar. As soon as he saw the apparition he stood still, growling furiously; he began to bark, and when I encouraged him to come on, he turned round and ran back to the house. I shut up the dog in another room, brought back the bogey to its former place, and threw a strong light upon it before recalling the dog. At the first sight of the bogey the dog paused suspiciously for an instant, but when I sat down to the table as usual, he hesitated a little and after snuffing at it went back to his couch.
I have made similar experiments with dogs, rabbits, birds, and other animals. I took long wooden poles, and put them inside their cages or hutches in such a way that the animals got to know and feel reconciled to the sight of them. After some days had elapsed, I contrived, while screened from sight, to take the poles from their usual place and to make them touch and annoy the animals with more or less violence, thus causing them to flutter or scamper about and to shrink away, as if from the touch of a living person, although they were unable, as I have said, to see me or my hand. Those which were least agitated sprang forward with little leaps and looked about them, doubtful and excited. I might go on to describe many other experiments made with the same object, and always with the same result, but these are enough to show that I went to work cautiously and conscientiously, that the spontaneous and innate personification of the objects perceived by animals is clearly apparent, and also how we may account for their indifference to those to which they become accustomed.