The Geneva correspondent of the Morning Post says that a
Neuchatel inventor has at last solved the problem of working a clock by atmospheric pressure. Earlier experimenters failed because although variations in the atmospheric pressure undoubtedly supplied them with some energy, it was not nearly enough to overcome the ordinary friction of a clock. At last a clock has been used which is said to require only one-thousandth part of the energy ordinarily necessary to drive a clock. The correspondent says that the clock has been running for several months. A certain amount of surplus energy . is stored in a spring so that a freakish period of non- variability of temperature is provided for. The inventor cannot claim, however, the discovery :of " perpetual motion." For the energy is external—it is not provided by the clock. * *
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