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FORE:To construe the term "transmission of power" in its full sense, it will, when applied to machinery, include nearly all that has motion; for with the exception of the last movers, or where power passes off and is expended upon work that is performed, all machinery of whatever kind may be called machinery of transmission. Custom has, however, confined the use of the term to such devices as are employed to convey power from one place to another, without including organised machines through which power is directly applied to the performance of work. Power is transmitted by means of shafts, belts, friction wheels, gearing, and in some cases by water or air, as various conditions of the work to be performed may require. Sometimes such machinery is employed as the conditions do not require, because there is, perhaps, nothing of equal importance connected with mechanical engineering of which there exists a greater diversity of opinion, or in which there is a greater diversity of practice, than in devices for transmitting power.Xenophon gives the same interest a more edifying direction when he enlivens the dry details of his Cyropaedia with touching episodes of conjugal affection, or presents lessons in domestic economy under the form of conversations between a newly-married couple.107 Plato in some respects transcends, in others falls short of his less gifted contemporary. For his doctrine of love as an educating process��a true doctrine, all sneers and perversions notwithstanding��though readily applicable to the relation of the sexes, is not applied to it by him; and his project of a common training for men and women, though suggestive of a great advance on the existing system if rightly carried out, was, from his point of view, a retrograde step towards savage or even animal life, an attempt to throw half the burdens incident to a military organisation of society on those who had become absolutely incapable of bearing them.

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