The Secret of Longevity.

A French medical man who has just died at the age of one hundred and seven, pledged his word to reveal the secret of his longevity, when no more, for the benefit of others. It was stipulated, however, that the precious envelope containing the recipe for long life was not to be opened until he had been buried. The doctor's prescription, now made known, is simple enough; and easy to follow; but whether it is as available as he pretends, the Journal of Chemistry says, is extremely doubtful. He tells his fellow-men, that, if they wish to live for a century or more, they have but to pay attention to the position of their beds. "Let the head of the bed be placed to the north, the foot to the south; and the electric current, which is stronger during the night in the direction of the north, will work wonders on their constitutions, insure them healthier rest, strengthen their nervous system, and prolong their days." It is, he adds, to scrupulous attention to the position of his bed that he ascribes his longevity, the enjoyment of perfect health, and the absence of infirmity.