TWO:(1.) Why does machinery involve so many cylindrical forms?(2.) Why is it desirable to have separate feed gear for turning and screw cutting?(3.) What is gained by the frictional starting gearing now applied to the finer class of lathes?(4.) How may the alignment of a lathe be tested?(5.) What kind of deviation with a lathe carriage will most affect the truth of work performed?(6.) How may an oval hole be bored on a common slide lathe?(7.) How can the angular [128] ways of a lathe and the corresponding grooves in a carriage be planed to fit without employing gauges?(8.) Give the number of teeth in two wheels to cut a screw of ten threads, when a leading screw is four threads per inch?
TWO:Next to Temperance comes Fortitude; and with it the difficulties of reconciling Epicureanism with the ordinary morality are considerably increased. The old conception of this virtue was willingness to face pain and death on behalf of a noble cause,138 which would be generally understood to mean the salvation of family, friends, and fatherland; and the ultimate sanction of such self-devotion was found in the pressure of public opinion. Idealistic philosophy, taking still higher ground, not69 only refused to balance the fear of pain and death against the fear of infamy or the hope of applause, but added public opinion to the considerations which a good man in the discharge of his duty would, if necessary, despise. Epicurus also inculcated disregard for reputation, except when it might lead to inconveniences of a tangible description;139 but he had nothing beyond the calculations of self-interest to put in its place. A modern utilitarian is bound to undergo loss and suffering in his own person for the prevention of greater loss and suffering elsewhere; an egoistic hedonist cannot consistently be brave, except for the sake of his own future security. The method by which Epicurus reconciled interest with courage was to minimise the importance of whatever injuries could be inflicted by external circumstances; just as in his theory of Temperance he had minimised the importance of bodily pleasures. How he disposed of death will best be seen in connexion with his physical philosophy. Pain he encountered by emphasising, or rather immensely exaggerating, the minds power of annulling external sensation by concentrating its whole attention on remembered or anticipated pleasures, or else on the certainty that present suffering must come to an end, and to a more speedy end in proportion to its greater severity. We are to hold a fire in our hand, partly by thinking of the frosty Caucasus, partly by the comforting reflection that the pain of a burn, being intense, will not be of long duration; while, at worst, like the Stoics, we have the resource of suicide as a last refuge from intolerable suffering.140"What do you think of the letter, sir?" Prout asked.
