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Sequoia gigantea (Lindl.) Decn.
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Soon, however, the awe of the unfathomable age of these relicts of time is supplanted by a score of questions, the foremost being how and why. Certain obvious answers that scratch the surface only may partly satisfy. It is readily understood that trees with resin-free wood and fibrous, asbestos-like bark as much as two feet thick can withstand forest fires more successfully than thin-barked pitchy trees. It is obvious that wood containing large quantities of tannin would repel insect pests which attack and kill the associates of these trees. But these evident explanations do not solve the problem. They are factors, to be sure, but not the solution. This remains locked in their silent, sturdy heartwood awaiting the magic key of a discerning mind.
Although the age of Big Trees is utterly incomprehensible, it would seem that any person could appreciate their size. Certainly, trees twenty to thirty feet in diameter must look large. But this is frequently not so, for Big Trees have a subtle way of minimizing their immensity especially when surrounded by large pines and firs and other Big Trees. The well-proportioned symmetry of the colossal trunks, that grow steadily up without appreciably diminishing in diameter, makes them quite conspicuous elements amongst their somber hued associates. Yet they do not stand out as curiosities or marvels. Instead, the Giant Sequoias seem to be in serene harmony, just stronger notes in the symphony of trees.
Since the Big Tree grows in such restricted and well-known localities, no summary of their identification characters is necessary. Details of this nature may be found, if desired, in many publications. Likewise, many descriptions of their majesty and beauty have been attempted. Big Trees seem, however, to defy adequate interpretation. Each person must experience for himself their solemn sermons, must see the trees whose ancestors existed before there were birds to nest in their boughs and must wonder at the persistence of a race that has lived eon after eon practically unchanged.
Visit one of the three groves of sequoias in Yosemite National Park and experience for yourself the feeling that inspired Colonel Charles Goff Thomson to write the following beautiful lines:
These Sequoia gigantea represent the only living
Here live venerable forest kings in reveries that
In their majestic shadows fretting men may well
Here, through a compelling humility, men may achieve
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