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Who said: “As far as the laws of mathematics refer to reality, they are not certain; and as far as they are certain, they do not refer to reality.”
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Thumbnail of Alexander George McAdie (source)
Alexander George McAdie
(4 Aug 1863 - 1 Nov 1943)

American meteorologist who followed Benjamin Franklin in employing kites in the exploration of high altitude air conditions. He was second director of the Blue Hill Meteorological Observatory.

Muir of the Mountains

from Sierra Club Bulletin (Jan 1916)

[These reminiscences in a memorial issue about John Muir were written by Alexander McAdie, who was vice president of the Sierra Club from 1904 to 1913, during some of the years that John Muir was its first president (1892-1914). McAdie was responsible in 1907 for the naming of Mount Muir, a peak in the Sierra Nevada of California, neighboring Mount Whitney.]

John Muir standing at Glacier Point, Yosemite Valley (1903)
John Muir on Glacier Point, Yosemite Valley, California, in 1903
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[p.20] A scientific friend [Dr. Otto Klotz, the Dominion Astronomer] recently sent me some measurements of the displacement of earth particles at Ottawa caused by a mountain slide in the Pamir. Seismographs in the Dominion Observatory (and elsewhere) had faithfully recorded the train of earth waves started by the trembling range ten thousand miles away. Moreover it was possible to determine the mass, momentum and energy involved in this fall of a mountain. John Muir would have been interested in these measurements made at a distance, but undoubtedly would have been far more interested in a description of the fall itself, and would have cheerfully started at a moment's notice for Afghanistan or the uttermost part of the earth if assured that another gigantic slide were imminent. Entirely regardless of comfort or personal security he would have watched the mountain fall, exulting in the rare privilege of thus viewing at close range the making and unmaking of the “eternal” hills. We would have had a description, both accurate and eloquent, for he would have written into it not only what the eye beheld, but much that other men must have failed to note, because they failed to feel. His nature was keenly sensitive to the significance of motion in inanimate things. One recalls his story of the earthquake in the Yosemite. “A noble earthquake,” he cried, as he ran from his tent in the early morning to get a better view of what was happening in the Valley. This was the famous Inyo earthquake of March 26, 1872, about 2:30 a.m., with aftershocks until 6:30 a.m.; and probably the greatest seismic disturbance that has occurred in the United States for two centuries. It was quite severe in the whole Sierra zone, and of course to those who were in the Yosemite at the time was a most terrifying experience. Mr. Muir often described the scene to the writer and fellow members of the Sierra Club. It is plain that after the first two or [p.21] three seconds of doubt and trepidation, Muir realized what was happening and enthusiastically welcomed such an opportunity for close observation of the swaying trees, and the piling up of the talus by the torrent of rocks from the cliffs, forming a luminous bow as they fell. His intense interest and forgetfulness of self were not assumed, but the natural expression of a spirit all eager to observe and interpret, if he could, the shaking earth and allied phenomena. He was probably the one man in the Valley who kept his head while these unnerving events were in progress.

He had many stirring adventures while climbing and roaming. One in particular was in later years somewhat joculary referred to as “a personally conducted ride on an avalanche,” although at the time it was anything but a jocular matter. Here again Muir showed remarkable presence of mind. And how he exulted in the mountain storms! Nothing of their majesty and might escaped his notice. He knew them well, from the towering cumulo-nimbus, whose slow upbuilding foretold the coming thunder, to the wild rush and wrestling of the blast with the forest monarchs. Sprung from a long line of Highland forebears, he scanned with critical eye the gray low-flying scud and the fast falling flakes that blotted out the landscape and bewildered men. To Muir these were never-to-be-forgotten and everto-be-enjoyed manifestations of Nature's might and her thousand ways of casting forth her strength.

Or turning from scenes of elemental strife to those of elemental calm, we can picture him keeping lonely vigil on the summit of Whitney. Wandering as night falls, near the crest of the range, the solitary figure looms large against the sky-line. Out of the world, yet in it; no human hand within touching distance, no human habitation within a day's march; serene and self-poised, like one of the prophets of old he strays from men. And as the sun passes below the farther peaks, and darkness broods o'er the vast stretch of earth, he holds communion with the friendly stars, nor knows nor feels his loneliness.

Of all the mountains he had visited, and he had climbed many in all parts of the world, his heart ever turned to and yearned most for the Sierra, or, as he called them, the Mountains of Light. They were his constant inspiration, and all their varying [p.22] moods he knew and loved. Loitering through the meadows or scaling the heights, Muir was here at home and at his best. Not infrequently he was called upon to act as guide, interpreter and host to those who came from afar. For all such he mixed with the independence of a mountaineer a true Highland hospitality. It was delightful to hear him tell of Emerson's visit, all too brief, or the later, longer outing of an intrepid former president, who insisted on having Muir for his escort and Muir only. Both saw to it that the trivialities of city life were left behind and forgotten. There was no room for artificialities in the friendly mountains. Rather the long day's tramp, the inspiring views, the refreshment of the mountain stream, the growing appetite, the simple meal, the quiet mind, the pine-bough bed and restful sleep beside the camp-fire, that, flickering, threw into bolder relief the sentinel Sequoia.

Muir was the keenest of observers and no mean scientist; but it was his power of expression and gift of interpretation that made him known among men. He was able to convey to others a full measure of his own enthusiasm, and kindle in them an unquenchable longing for out-of-door life, and golden, glorious days and nights in Nature's own playground, the mountains. This was Muir's mission and at it he wrought diligently. His influence was not confined to one city or one State. It is indeed a question if this was not greater in distant lands than in the State and section where he dwelt and which he loved so well.

When a mountain falls and jars the planet's crust, the earth waves spread in all directions with ever widening circles but ever diminishing energy. When a great man passes from the sunlit way, human interest is stirred in many lands, but there is no lessening of appreciation and sympathy with increasing distance. Thus it is with Muir. He stood as a great advocate for the preservation of the wild and the beautiful; he gave the best that was in him to the service of men; he strove earnestly to turn their thoughts from the daily routine, with its unrest and turmoil, to the peace and beauty of the hills.

His eloquent sentences will remain as long as our mother tongue endures; his pleadings will not lose their force, and his influence can but spread and strengthen as he years pass.

A footnote giving the name of Dr. Otto Klotz has been moved inline to improve readability. Photo added, not from original text. Article from Sierra Club Bulletin (Jan 1916), 10, No. 1, 20-22. This was the 'John Muir Memorial Number' with recollections of Muir by several writers. (source)

See also:

Nature bears long with those who wrong her. She is patient under abuse. But when abuse has gone too far, when the time of reckoning finally comes, she is equally slow to be appeased and to turn away her wrath. (1882) -- Nathaniel Egleston, who was writing then about deforestation, but speaks equally well about the danger of climate change today.
Carl Sagan Thumbnail Carl Sagan: In science it often happens that scientists say, 'You know that's a really good argument; my position is mistaken,' and then they would actually change their minds and you never hear that old view from them again. They really do it. It doesn't happen as often as it should, because scientists are human and change is sometimes painful. But it happens every day. I cannot recall the last time something like that happened in politics or religion. (1987) ...(more by Sagan)

Albert Einstein: I used to wonder how it comes about that the electron is negative. Negative-positive—these are perfectly symmetric in physics. There is no reason whatever to prefer one to the other. Then why is the electron negative? I thought about this for a long time and at last all I could think was “It won the fight!” ...(more by Einstein)

Richard Feynman: It is the facts that matter, not the proofs. Physics can progress without the proofs, but we can't go on without the facts ... if the facts are right, then the proofs are a matter of playing around with the algebra correctly. ...(more by Feynman)
Quotations by: • Albert Einstein • Isaac Newton • Lord Kelvin • Charles Darwin • Srinivasa Ramanujan • Carl Sagan • Florence Nightingale • Thomas Edison • Aristotle • Marie Curie • Benjamin Franklin • Winston Churchill • Galileo Galilei • Sigmund Freud • Robert Bunsen • Louis Pasteur • Theodore Roosevelt • Abraham Lincoln • Ronald Reagan • Leonardo DaVinci • Michio Kaku • Karl Popper • Johann Goethe • Robert Oppenheimer • Charles Kettering  ... (more people)

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- 100 -
Sophie Germain
Gertrude Elion
Ernest Rutherford
James Chadwick
Marcel Proust
William Harvey
Johann Goethe
John Keynes
Carl Gauss
Paul Feyerabend
- 90 -
Antoine Lavoisier
Lise Meitner
Charles Babbage
Ibn Khaldun
Ralph Emerson
Robert Bunsen
Frederick Banting
Andre Ampere
Winston Churchill
- 80 -
John Locke
Bronislaw Malinowski
Thomas Huxley
Alessandro Volta
Erwin Schrodinger
Wilhelm Roentgen
Louis Pasteur
Bertrand Russell
Jean Lamarck
- 70 -
Samuel Morse
John Wheeler
Nicolaus Copernicus
Robert Fulton
Pierre Laplace
Humphry Davy
Thomas Edison
Lord Kelvin
Theodore Roosevelt
Carolus Linnaeus
- 60 -
Francis Galton
Linus Pauling
Immanuel Kant
Martin Fischer
Robert Boyle
Karl Popper
Paul Dirac
James Watson
William Shakespeare
- 50 -
Stephen Hawking
Niels Bohr
Nikola Tesla
Rachel Carson
Max Planck
Henry Adams
Richard Dawkins
Werner Heisenberg
Alfred Wegener
John Dalton
- 40 -
Pierre Fermat
Edward Wilson
Johannes Kepler
Gustave Eiffel
Giordano Bruno
JJ Thomson
Thomas Kuhn
Leonardo DaVinci
David Hume
- 30 -
Andreas Vesalius
Rudolf Virchow
Richard Feynman
James Hutton
Alexander Fleming
Emile Durkheim
Benjamin Franklin
Robert Oppenheimer
Robert Hooke
Charles Kettering
- 20 -
Carl Sagan
James Maxwell
Marie Curie
Rene Descartes
Francis Crick
Michael Faraday
Srinivasa Ramanujan
Francis Bacon
Galileo Galilei
- 10 -
John Watson
Rosalind Franklin
Michio Kaku
Isaac Asimov
Charles Darwin
Sigmund Freud
Albert Einstein
Florence Nightingale
Isaac Newton

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