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TWO:There is, however, a principle in hydraulic machinery that must be taken into account, in comparing it with positively geared mechanism, which often leads to loss of power that in many cases will overbalance any gain derived from the peculiar action of hydraulic apparatus. I allude to the loss of power incident to dealing with an inelastic medium, where the amount of force expended is constant, regardless of the resistance offered. A hydraulic crane, for instance, consumes power in proportion to its movements, and not as the amount of duty performed; it takes the same quantity of water to fill the cylinders of such cranes, whether the water exert much or little force in moving the pistons. The difference between employing elastic mediums like air and steam, and an inelastic medium like water, for transmitting force in performing irregular duty, has been already alluded to, and forms a very interesting study for a student in mechanics, leading, as it does, to the solution of many problems concerning the use and effect of power.Leona bent forward to listen. Even Charlton seemed to have forgotten his troubles for the moment. A beam of light illuminated his sombre face.

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THREE:243

FORE:"'Instead of facing such an impartial inquiry with an examination of all available witnesses and punishment of the guilty, the German government finds the courage only to call me, a month after the event, "a liar," and the whole story a fairy-tale!I was greatly astonished to see a little old man sitting by his house, while all those in the neighbour118hood were burning. His own dwelling had escaped without much damage, and was only hit by rifle bullets. He told me that his family had fled, his son with wife and all children but one, a small boy. At length he left also, but had lost his way outside the town, and returned to his house, where the Germans "allowed" him to remain. I considered that I might after all sleep better in that house than yonder among the soldiers, and asked the little man whether he would put me up for the night. He did not object at all; but in spite of my pressing, he refused absolutely to accept any payment.