We must, therefore, base our method of procedure on some definite principle. The canon of interpretation which I have elsewhere suggested[158] is, that we should not interpret animal behaviour as the outcome of higher mental processes, if it can be fairly explained as due to the operation of those which stand lower in the psychological scale of development. To this it may be added—lest the range of the principle be misunderstood—that the canon by no means excludes the interpretation of a particular act as the outcome of the higher mental processes, if we already have independent evidence of their occurrence in the agent. Now, the conclusion to which we are led by direct experiment and a critical study of the actions of animals whose life-history is known to us is, that most of their behaviour—perhaps all—is due to what Dr. Stout terms the perceptual, as opposed to the ideational, exercise of cognition. Their behaviour can be explained without having recourse to the hypothesis that they reflect, and attain to ideal schemes as the result of abstraction and generalization consciously directed to this end. Rather than repeat what I have already said, I will quote Dr. Stout’s summary of the position to which he, too, has been led. “The vast interval,” he says,[159] “which separates human achievements, so far as they depend on human intelligence, from animal achievements, so far as they depend on animal intelligence, is connected with the distinction between perceptual and ideational process. Animal activities are either purely perceptual, or, in so far as they involve ideas, these ideas serve only to prompt and guide an action in its actual execution. On the other hand, man constructs ‘in his head,’ by means of trains of ideas, schemes of action before he begins to carry them out. He is thus capable of overcoming difficulties in advance. He can cross a bridge before he comes to it.”

It has already been stated that in the intelligent behaviour of animals under man’s teaching he is the rational agent, they his willing slaves. This may be here again illustrated to enforce the distinction drawn by Dr. Stout in the above passage. Those who have seen a shepherd’s dog working sheep on a moorland fell, and have taken the trouble to ascertain how the results he sees have been attained, will appreciate, on the one hand, how well the dog knows and responds to the signals of his master, and, on the other hand, how completely all initiation is in the master’s mind, not that of the keenly intelligent dog. Those who merely witness such a performance without inquiry or investigation will probably misunderstand the whole matter. In the north of England competitions are not uncommon where, say, three sheep have to be driven over a definite course, between certain posts and round others, through narrow passages and into a fold—all within a certain time limit. At such a competition success depends on two things: first, the training of the dog to respond at once to some six or eight whistle-signals, often accompanied by gestures and movements of a stick; and secondly, the judgment of the shepherd. The signals, given in different whistle-tones and inflections, have for the dog meaning, such as drive straight on, from this side, from that, stop, lie down, creep, and so forth. The dog’s whole business is to obey these signals. And the instant response of a well-trained dog is admirable. But in the whole proceeding he is merely the executant of his master’s orders. He originates no important step. And if you listen to the criticisms by other shepherds during a competition you will find that they are mainly passed on the judgment shown by the master, and only in palpable failures in obedience on the behaviour of the dog. The intelligent animal is what he is trained to be—one whose natural powers are under the complete control of his master with whom the whole plan of action lies.

Since, then, in the cognitional field we find no independent evidence of the higher processes, we are bound, in accordance with our canon, to interpret emotional situations on similar principles, unless we find in them outstanding facts which cannot be explained in this way.

In considering the pairing situation we urged that the framing of an ideal of beauty to which a given suitor approaches, or from which he falls short, is unnecessary for the interpretation of the facts. We should not in strictness, therefore, speak of “an appreciation of beauty” or “a taste for the beautiful” in birds, since such expressions almost inevitably imply that these creatures have reached some conception of beauty as distinguished from and contrasted with ugliness. At the same time the hen certainly appears to enjoy the situation of which the plumed cock, attitudinizing thus, forms the centre of interest—through which he acquires meaning. Although, therefore, there is probably no ideal or standard of beauty, there are afforded the data in experience from which, were the bird capable of reflection, such an ideal might, in ideational sublimation, be derived. Before comparison, abstraction, and generalization can be applied, in the reflective laboratory of thought, there must be suitable experiences to form the raw material on which these rational processes can be exercised. Long ere, in the course of mental evolution, the correlative conceptions implied in the phrase “beautiful or ugly” had taken definite form, perceptual situations must have arisen, where, by direct appeal to the senses, by the diffused effects of stimulation and their accompanying feeling-tone, and by the natural satisfaction of mere impulse, the foundations were laid of that appreciation of the beautiful which forms the reflective superstructure we build upon them. Indeed, the pleasure and satisfaction attending particular situations, as they severally arise, appear to contain the perceptual germs of what in later development becomes æsthetic appreciation.

The bird which, having completed its nest, eyes it with apparent satisfaction, may well have the germs of that which, when rendered schematic in our thought, we call taste. Dr. Gould, indeed, states that certain humming-birds decorate their nests “with the utmost taste,” weaving into their structure beautiful pieces of lichen. And the gardener bower-bird collects in front of its bower flowers and fruits of bright and varied colours. What meaning these carry in the conscious situation we do not know; we can only suppose that they incidentally contribute to the heightening of the sexual impulse, and have been evolved as a means of stimulation to the biological end towards which sexual selection is unconsciously directed. For it is probable that all the situations with which pleasure and satisfaction are in high degree associated are, in primary origin, closely connected with behaviour directed, through natural or sexual selection, to some definite biological end, or, in brief, with behaviour of biological value. And it is, perhaps, not improbable that the states of consciousness most highly toned with strong emotion have their origin in those situations which arise amid the pairing, parental, and companiable relations of animal life.

We have already said that the companion, as the nucleus of a situation, is a thing which reacts in altogether special ways, so that it becomes differentiated from other things as something the meaning of which, and the interest in which, are sui generis and unique in type. It becomes the centre of emotional situations, which we ascribe to rivalry, emulation, jealousy, and so forth. And we have also drawn attention to the view that the genetic order, so far as there is an order, is not first the ego and then the alter, but first the mother and companions and then through them the self. We learn to know ourselves only through knowing others. We must now ask the question—a question which must be answered before we can touch on the possible ethics of animals—how far, and in what sense, the social animal regards others as of like nature to itself, and capable also of like feelings and emotions. Stated in this form we must, I think, answer the question in the negative. The expression, “of like nature to itself,” implies that the self has already taken more or less definite form, and that the animal infers that, since the alter behaves and reacts in like manner to the ego, it also is an ego. This is distinctly an act of reasoning. As Clifford phrased it, the companion becomes an eject. We can never by direct experience become acquainted with the feelings of others, but we can endow them ejectively with personality analogous to our own.

But, though it is exceedingly doubtful whether any animal can regard its companion as an “eject,” may there not be a perceptual anticipation of the ideational process that comes with later-developed reflection? A decade ago I gave the following answer to this question: “For myself, I cannot doubt that animals project into each other the shadows of the feelings of which they are themselves conscious.”[160] Professor Mark Baldwin speaks of the stage at which this takes place, as the “projective stage” of development. “Now, in the fact,” he says,[161] “of herding, common life and arrangements for the protection of the herd, animal societies of various kinds, animal division of labour, etc.,—whatever be the origin of it,—we have what seems to be such an epoch in animal life. These creatures show a real recognition of one individual by another, and a real community of life and reaction, which is quite different from the individualism of purely sensational and unsocial consciousness. And yet it is just as different from the reflective organization of human society, in which the self-consciousness and personal volition of the individual play the most important rôle. I see no way of accounting for the gregarious instinct anywhere, except on the assumption of such a projective epoch of animal consciousness.”

Now, in endeavouring to realize how the situation feels to an animal in this projective stage, the first difficulty we encounter is that of divesting ourselves of those products of reflection which characterize our own mental situation; and to avoid what Dr. Stout, in the passage above quoted,[162] terms the psychologist’s besetting snare. The second difficulty is to grasp that, in experience, subject and object are inseparable, however clearly we may learn to perceive that they are distinguishable aspects of that experience. If the subject is eventually regarded as that which experiences, and the object as that which is experienced, it is surely obvious that each is necessary to the other. But, before these different aspects are clearly distinguished, there is, in the perceptual stage of mental development, what we may term a distribution of the items of experience among the centres of interest.

In illustration of the kind of distribution which we may suppose to come naturally to an animal, in what Professor Baldwin terms the projective epoch, let us take three animal situations: first, a chick pecks at a soldier-beetle, and finds it nauseous; secondly, a hen-bird hears the joyous song of her mate; thirdly, a puppy in play bites its companion, and receives a painful nip in return. Each of these constitutes an experience-situation; assuming that the results of the experience are distributed, how may we suppose them to be allocated?