"What! A Netherlander? I suppose you come to see how many troops are here, don't you? And then...."(1.) What analogy may be found between steam and water power?(2.) What is the derivation of the name turbine?(3.) To what class of water-wheels is this name applicable?(4.) How may water-wheels be classified?(5.) Upon what principle does a reaction water-wheel operate?(6.) Can ponderable weight and pressure be independently considered in the case?(7.) Why cannot radial running joints be maintained in machines?(8.) Describe the mechanism in common use for sustaining the weight of turbine wheels, and the thrust of propeller shafts.
ONE:Two South-American boys, about twelve years old, had stayed on and heroically assisted the Head at his charitable work. Dr. Goffin was not allowed to take anybody with him except these two children in his search for the wounded, and to bury the dead. It is scarcely credible how courageously these boys of such tender age behaved. Later the83 Chilean ambassador made inquiries about them and asked for their portraits.
THREE:At this point will occur one of those mechanical problems which requires what may be called logical solution. The valve must be moved by the drop; there is no other moving mechanism available; the valve and drop must besides be connected, to insure coincident action, yet the valve requires to move when the drop is still. Proceeding inductively, it is clear that a third agent must be introduced, some part moved by the drop, which will in turn move the valve, but this intermediate agent so arranged that it may continue to move after the hammer-drop has stopped.
One day, some few years after the death of Aristotle, a short, lean, swarthy young man, of weak build, with clumsily shaped limbs, and head inclined to one side, was standing in an Athenian bookshop, intently studying a roll of manuscript. His name was Zeno, and he was a native of Citium, a Greek colony in Cyprus, where the Hellenic element had become adulterated with a considerable Phoenician infusion. According to some accounts, Zeno had come to the great centre of intellectual activity to study, according to others for the sale of Tyrian purple. At any rate the volume which he held in his hand decided his vocation. It was the second book of Xenophons Memoirs of Socrates. Zeno eagerly asked where such men as he whose sayings stood recorded there were to be found. At that moment the Cynic Crates happened to pass by. There is one of them, said the bookseller, follow him.12The problem, then, which Spinoza set himself was, first, to account for the fundamental assumptions of all science, and more particularly of geometry, by deducing them from a single self-evident principle; and then to use that principle for the solution of whatever problems seemed to stand most in need of its application. And, as usually happens in such adventurous enterprises, the supposed answer of pure reason was obtained by combining or expanding conceptions borrowed without criticism from pre-existing systems of philosophy.They compared notes eagerly. Dick and Sandy could hardly forego interrupting one another as they brought their story up to the minute after hearing how Larry had helped to get the pilot to the amphibian, discovering and rescuing the life preserver on the way.And, in fact, it was by a close study of that writers voluminous treatises that he was able to cover the immense extent of ground which Scepticism thenceforward disputed with the dogmatic schools. Nor were his attacks directed against Stoicism only, but against all other positive systems past and present as well. What he says about the supposed foundation of knowledge is even now an unanswerable objection to the transcendental realism of Mr Herbert Spencer. States of consciousness speak for themselves alone, they do not include the consciousness of an external cause.234 But the grounds on which he rests his negation of all certainty are still superficial enough, being merely those sensible illusions which the modern science of observation has been able either to eliminate altogether or to restrict within narrow and definable limits. That phenomena, so far from being necessarily referred to a cause which is not phenomenal, cannot be thought of at all except in relation to one another, and that knowledge means nothing more than a consciousness of this relation, was hardly perceived before the time of Hume."And if the German authorities intend to institute a serious and impartial inquiry, then I give them the following particulars:Sixth.Power can be transmitted to steam-hammers through a small pipe, which may be carried in any direction, and for almost any distance, at a moderate expense, so that hammers may be placed in such positions as will best accommodate the work, and without reference to shafts or other machinery.
