On the 13th of September, in the evening, Columbus, for the first time, noticed the variation of the needle, a phenomenon which had never before been remarked. He at first made no mention of it, lest his people should be alarmed; but it soon attracted the attention of the pilots and filled them with consternation. It seemed as if the very laws of nature were changing as they advanced, and that they were entering another world, subject to unknown influences. They apprehended that the compass was about to lose its mysterious virtues, and, without this guide, what was to become of them in a vast and trackless ocean? Columbus tasked his science and ingenuity for reasons with which to allay their terrors. He told them that the direction of the needle was not to the polar star, but to some fixed and invisible point. The variation, therefore, was not caused by any fallacy in the compass, but by the movement of the north star itself, which, like the other heavenly bodies, had its changes and revolutions, and every day described a circle round the pole. The high opinion they entertained of Columbus as a profound astronomer gave weight to his theory, and their alarm subsided.

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