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6. Rapid oscillations of the barometer should never be interpreted as presaging dry or rainy weather of any duration. Those indications are given exclusively by the rising or the falling which takes place in a slow and continuous manner. 7. Toward the end of autumn, if after prolonged rainy and windy weather, the barometer begins to rise, that rising announces the passage of the wind to the north and the approach of the frost. Such are the general consequences to draw from the indications of this precious instrument. Dick Sand knew all that perfectly well, as he had ascertained for himself in different circumstances of his sailor's life, which made him very skilful in putting himself on his guard against all contingencies. Now, just toward the 20th of February, the oscillations of the