Another man sees a fox lead a hound over a long railroad trestle, when the hound is caught and killed by a passing train. He interprets the fact as a cunning trick on the part of the fox to destroy his enemy! A captive fox, held to his kennel by a long chain, was seen to pick up an ear of corn that had fallen from a passing load, chew it up, scattering the kernels about, and then retire into his kennel. Presently a fat hen, attracted by the corn, approached the hidden fox, whereupon he rushed out and seized her. This was a shrewd trick on the part of the fox to capture a hen for his dinner! In this, and in the foregoing cases, the observer supplies something from his own mind. That is what he or she would do under like conditions. True, a fox does not eat corn; but an idle one, tied by a chain, might bite the kernels from an ear in a mere spirit of mischief and restlessness, as a dog or puppy might, and drop them upon the ground; a hen would very likely be attracted by them, when the fox would be quick to see his chance.
Some of the older entomologists believed that in a colony of ants and of bees the members recognized one another by means of some secret sign or password. In all cases a stranger from another colony is instantly detected, and a home member as instantly known. This sign or password, says Burmeister, as quoted by Lubbock, "serves to prevent any strange bee from entering into the same hive without being immediately detected and killed. It, however, sometimes happens that several hives have the same signs, when their several members rob each other with impunity. In these cases the bees whose hives suffer most alter their signs, and then can immediately detect their enemy." The same thing was thought to be true of a colony of ants. Others held that the bees and the ants knew one another individually, as men of the same town do! Would not any serious student of nature in our day know in advance of experiment that all this was childish and absurd? Lubbock showed by numerous experiments that bees and ants did not recognize their friends or their enemies by either of these methods. Just how they did do it he could not clearly settle, though it seems as if they were guided more by the sense of smell than by anything else. Maeterlinck in his "Life of the Bee" has much to say about the "spirit of the hive," and it does seem as if there were some mysterious agent or power at work there that cannot be located or defined.
This current effort to interpret nature has led one of the well-known prophets of the art to say that in this act of interpretation one "must struggle against fact and law to develop or keep his own individuality." This is certainly a curious notion, and I think an unsafe one, that the student of nature must struggle against fact and law, must ignore or override them, in order to give full swing to his own individuality. Is it himself, then, and not the truth that he is seeking to exploit? In the field of natural history we have been led to think the point at issue is not man's individuality, but correct observation—a true report of the wild life about us. Is one to give free rein to his fancy or imagination; to see animal life with his "vision," and not with his corporeal eyesight; to hear with his transcendental ear, and not through his auditory nerve? This may be all right in fiction or romance or fable, but why call the outcome natural history? Why set it down as a record of actual observation? Why penetrate the wilderness to interview Indians, trappers, guides, woodsmen, and thus seek to confirm your observations, if you have all the while been "struggling against fact and law," and do not want or need confirmation? If nature study is only to exploit your own individuality, why bother about what other people have or have not seen or heard? Why, in fact, go to the woods at all? Why not sit in your study and invent your facts to suit your fancyings?
My sole objection to the nature books that are the outcome of this proceeding is that they are put forth as veritable natural history, and thus mislead their readers. They are the result of a successful "struggle against fact and law" in a field where fact and law should be supreme. No doubt that, in the practical affairs of life, one often has a struggle with the fact. If one's bank balance gets on the negative side of the account, he must struggle to get it back where it belongs; he may even have the help of the bank's attorney to get it there. If one has a besetting sin of any kind, he has to struggle against that. Life is a struggle anyhow, and we are all strugglers—struggling to put the facts upon our side. But the only struggle the real nature student has with facts is to see them as they are, and to read them aright. He is just as zealous for the truth as is the man of science. In fact, nature study is only science out of school, happy in the fields and woods, loving the flower and the animal which it observes, and finding in them something for the sentiments and the emotions as well as for the understanding.
With the nature student, the human interest in the wild creatures—by which I mean our interest in them as living, struggling beings—dominates the scientific interest, or our interest in them merely as subjects for comparison and classification.
Gilbert White was a rare combination of the nature student and the man of science, and his book is one of the minor English classics. Richard Jefferies was a true nature lover, but his interests rarely take a scientific turn. Our Thoreau was in love with the natural, but still more in love with the supernatural; yet he prized the fact, and his books abound in delightful natural history observations. We have a host of nature students in our own day, bent on plucking out the heart of every mystery in the fields and woods. Some are dryly scientific, some are dull and prosy, some are sentimental, some are sensational, and a few are altogether admirable. Mr. Thompson Seton, as an artist and raconteur, ranks by far the highest in this field, but in reading his works as natural history, one has to be constantly on guard against his romantic tendencies.
The structure of animals, their colors, their ornaments, their distribution, their migrations, all have a significance that science may interpret for us if it can, but it is the business of every observer to report truthfully what he sees, and not to confound his facts with his theories.
Why does the cowbird lay its egg in another bird's nest? Why are these parasitical birds found the world over? Who knows? Only there seems to be a parasitical principle in Nature that runs all through her works, in the vegetable as well as in the animal kingdom. Why is the porcupine so tame and stupid? Because it does not have to hunt for its game, and is self-armed against all comers. The struggle of life has not developed its wits. Why are robins so abundant? Because they are so adaptive, both as regards their food and their nesting-habits. They eat both fruit and insects, and will nest anywhere—in trees, sheds, walls, and on the ground. Why is the fox so cunning? Because the discipline of life has made him cunning. Man has probably always been after his fur; and his subsistence has not been easily obtained. If you ask me why the crow is so cunning, I shall be put to it for an adequate answer. It seems as if nobody could ever have wanted his skin or his carcass, and his diet does not compel him to outwit live game, as does that of the fox. His jet black plumage exposes him alike winter and summer. This drawback he has had to meet by added wit, but I can think of no other way in which he is handicapped. I do not know that he has any natural enemies; yet he is one of the most suspicious of the fowls of the air. Why is the Canada jay so much tamer than are other jays? They belong farther north, where they see less of man; they are birds of the wilderness; they are often, no doubt, hard put to it for food; their color does not make them conspicuous,—all these things, no doubt, tend to make them more familiar than their congeners. Why, again, the chickadee can be induced to perch upon your hand, and take food from it, more readily than can the nuthatch or the woodpecker, is a question not so easily answered. It being a lesser bird, it probably has fewer enemies than either of the others, and its fear would be less in proportion.
Why does the dog, the world over, use his nose in covering the bone he is hiding, and not his paw? Is it because his foot would leave a scent that would give his secret away, while his nose does not? He uses his paw in digging the hole for the bone, but its scent in this case would be obliterated by his subsequent procedure.
The foregoing is one way to interpret or explain natural facts. Everything has its reason. To hit upon this reason is to interpret it to the understanding. To interpret it to the emotions, or to the moral or to the æsthetic sense, that is another matter.