I There are three kinds of change in the world in which we live–physical and mechanical change which goes on in time and place among the tangible bodies about us, chemical change which goes on in the world of hidden molecules and atoms of which bodies are composed, and vital change which involves the two […]

I There is one phase of the much-discussed question of the nature and origin of life which, so far as I know, has not been considered either by those who hold a brief for the physico-chemical view or by those who stand for some form of vitalism or idealism. I refer to the small part […]

I All living bodies, when life leaves them, go back to the earth from whence they came. What was it in the first instance that gathered their elements from the earth and built them up into such wonderful mechanisms? If we say it was nature, do we mean by nature a physical force or an […]

I William James said that one of the privileges of a philosopher was to contradict other philosophers. I may add in the same spirit that one of the fatalities of many philosophers is, sooner or later, to contradict themselves. I do not know that James ever contradicted himself, but I have little doubt that a […]

In my youth I once heard the then well-known lecturer Starr King speak on “The Law of Disorder.” I have no recollection of the main thought of his discourse, but can see that it might have been upon the order and harmony that finally come out of the disharmonies of nature and of man. The […]

I Still the problem of living things haunts my mind and, let me warn my reader, will continue to haunt it throughout the greater part of this volume. The final truth about it refuses to be spoken. Every effort to do so but gives one new evidence of how insoluble the problem is. In this […]

I The mechanistic theory of life–the theory that all living things can be explained and fully accounted for on purely physico-chemical principles–has many defenders in our day. The main aim of the foregoing chapters is to point out the inadequacy of this view. At the risk of wearying my reader I am going to collect […]

I Emerson confessed in his “Journal” that he could not read the physicists; their works did not appeal to him. He was probably repelled by their formulas and their mathematics. But add a touch of chemistry, and he was interested. Chemistry leads up to life. He said he did not think he would feel threatened […]

Most people receive with incredulity a statement of the number of birds that annually visit our climate. Very few even are aware of half the number that spend the summer in their own immediate vicinity. We little suspect, when we walk in the woods, whose privacy we are intruding upon,–what rare and elegant visitants from […]

When I went to the Adirondacks, which was in the summer of 1863, I was in the first flush of my ornithological studies, and was curious, above else, to know what birds I should find in these solitudes,–what new ones, and what ones already known to me. In visiting vast primitive, far-off woods one naturally […]

How alert and vigilant the birds are, even when absorbed in building their nests! In an open space in the woods I see a pair of cedar-birds collecting moss from the top of a dead tree. Following the direction in which they fly, I soon discover the nest placed in the fork of a small […]

I came to Washington to live in the fall of 1863, and, with the exception of a month each summer spent in the interior of New York, have lived here ever since. I saw my first novelty in Natural History the day after my arrival. As I was walking near some woods north of the […]

The region of which I am about to speak lies in the southern part of the state of New York, and comprises parts of three counties,–Ulster, Sullivan and Delaware. It is drained by tributaries of both the Hudson and Delaware, and, next to the Adirondack section, contains more wild land than any other tract in […]

Spring in our northern climate may fairly be said to extend from the middle of March to the middle of June. At least, the vernal tide continues to rise until the latter date, and it is not till after the summer solstice that the shoots and twigs begin to harden and turn to wood, or […]

I HAVE said on a former occasion that “the true poet knows more about Nature than the naturalist, because he carries her open secrets in his heart. Eckermann could instruct Goethe in ornithology, but could not Goethe instruct Eckermann in the meaning and mystery of the bird?” But the poets sometimes rely too confidently upon […]

I Emerson’s fame as a writer and thinker was firmly established during his lifetime by the books he gave to the world. His Journals, published over a quarter of a century after his death, nearly or quite double the bulk of his writing, and while they do not rank in literary worth with his earlier […]

Pope said that a middling poet was no poet at all. Middling things in art or in any field of human endeavor do not arouse our enthusiasm, and it is enthusiasm that fans the fires of life. There are all degrees of excellence, but in poetry one is always looking for the best. Pope himself […]

When Aaron came again to camp and tramp with me, or, as he wrote, “to eat locusts and wild honey with me in the wilderness,” it was past the middle of August, and the festival of the season neared its close. We were belated guests, but perhaps all the more eager on that account, especially […]

The homing instinct in birds and animals is one of their most remarkable traits: their strong local attachments and their skill in finding their way back when removed to a distance. It seems at times as if they possessed some extra sense–the home sense–which operates unerringly. I saw this illustrated one spring in the case […]

One summer, while three young people and I were spending an afternoon upon a mountaintop, our dogs treed a porcupine. At my suggestion the young man climbed the tree–not a large one–to shake the animal down. I wished to see what the dogs would do with him, and what the “quill-pig” would do with the […]