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Remember also that it is this periodicity this inevitable tendency of all atoms in combination to repeat any combination which they have once repeated, unless forcibly prevented from doing so which alone renders nine- tenths of our mechanical inventions of practical use to us.
It is, then, purely an assumption, an interesting figment of the mind, that certain curious disturbances in the electrical state of the air and the earth, affecting delicate electric instruments, possessing a marked periodicity in brief intervals of time, and not yet otherwise accounted for, are due to the throbbing, in the all-enveloping ether, of impulses transmitted from instruments controlled by the savants of Mars, whose insatiable thirst for knowledge, and presumably burning desire to learn whether there is not within reach some more fortunate world than their half-dried-up globe, has led them into a desperate attempt to "call up" the earth on their interplanetary telephone, with the hope that we are wise and skilful enough to understand and answer them.
To live in constant efforts after an equal life, whether the equality be sought in mental production, or in spiritual sweetness, or in the joy of the senses, is to live without either rest or full activity. The souls of certain of the saints, being singularly simple and single, have been in the most complete subjection to the law of periodicity. Ecstasy and desolation visited them by seasons.
Periodicity, perhaps the deepest law of the cosmos, celebrates its highest triumphs in woman's life. For years everything must give way to its thorough and settled establishment. In the monthly Sabbaths of rest, the ideal school should revert to the meaning of the word leisure.
Even idleness is eager now eager for amusement; prone to excursion-trains, art museums, periodical literature, and exciting novels; prone even to scientific theorizing and cursory peeps through microscopes. Old Leisure was quite a different personage. He only read one newspaper, innocent of leaders, and was free from that periodicity of sensations which we call post-time.
And this change of periodicity is plainly connected with the growth of the conviction that the annual first-fruits belong to the gods a conviction springing from the belief that they are annually accepted by the god, a belief which in its turn implies a prior belief that they are acceptable.
In 1843 he announced a decennial period of maxima and minima of sun-spot displays. In 1851 it was generally accepted, and, although a period of eleven years has been found to be more exact, all later observations, besides the earlier ones which have been hunted up for the purpose, go to establish a true periodicity in the number of sun-spots.
Take the shape of the normal leaves in the first place. These are cordate at their base and mainly inequilateral, but the general shape varies to a considerable extent. This variation is closely related to the position of the leaves on the twigs, and shows distinct indications of complying with the general law of periodicity.
Our vanity impels us to invent explanations of the Universe which make our own existence important and significant. Nor does European science altogether support the Indian doctrine of periodicity.
If life is not always poetical, it is at least metrical. Periodicity rules over the mental experience of man, according to the path of the orbit of his thoughts. Distances are not gauged, ellipses not measured, velocities not ascertained, times not known. Nevertheless, the recurrence is sure.
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