THREE:Considered as means for transmitting power, the contrast as to advantages and disadvantages lies especially between belts and gearing instead of between belts and shafts. It is true in extreme cases, such as that cited at Crewe, or in conveying water-power from inaccessible places, through long distances, the comparison lies between belts and shafts; but in ordinary practice, especially for first movers, the problem as to mechanism for conveying power lies between belts and gear wheels. If experience in the use of belts was thorough, as it is in the case of gearing, and if the quality of belts did not form so important a part in the estimates, there would be but little difficulty in determining where belts should be employed and where gearing would be preferable. Belts are continually taking the place of gearing even in cases where, until quite recently, their use has been considered impracticable; one of the largest rolling mills in Pittsburg, Pennsylvania, except a single pair of spur wheels as the last movers at each train of rolls, is driven by belts throughout.Antisthenes and his school, of which Diogenes is the most popular and characteristic type, were afterwards known as Cynics; but the name is never mentioned by Plato and Aristotle, nor do they allude to the scurrility and systematic indecency afterwards associated with it. The anecdotes relating to this unsavoury subject should be received with extreme suspicion. There has always been a tendency to believe that philosophers carry out in practice what are vulgarly believed to be the logical consequences of their theories. Thus it is related of Pyrrho the Sceptic that when6 out walking he never turned aside to avoid any obstacle or danger, and was only saved from destruction by the vigilance of his friends.9 This is of course a silly fable; and we have Aristotles word for it that the Sceptics took as good care of their lives as other people.10 In like manner we may conjecture that the Cynics, advocating as they did a return to Nature and defiance of prejudice, were falsely credited with what was falsely supposed to be the practical exemplification of their precepts. It is at any rate remarkable that Epicttus, a man not disposed to undervalue the obligations of decorum, constantly refers to Diogenes as a kind of philosophical saint, and that he describes the ideal Cynic in words which would apply without alteration to the character of a Christian apostle.11