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ONE:"You shall see our friend presently," Balmayne went on. "Herr Maitrank--I mean the Countess's friend--made a late call here. I had occasion to go out after he had left and found him lying unconscious in the road. Whilst there it seemed he was robbed of certain valuables. He was so good as to suggest that it might have been here that he lost his gems--I mean his valuables."This principle is somewhat obscure, and the nature of percussive forces not generally considered��a matter which may be illustrated by considering the action of a simple hand-hammer. Few [103] people, in witnessing the use of a hammer, or in using one themselves, ever think of it as an engine giving out tons of force, concentrating and applying power by functions which, if performed by other mechanism, would involve trains of gearing, levers, or screws; and that such mechanism, if employed instead of a hammer, must lack that important function of applying force in any direction as the will and hands may direct. A simple hand-hammer is in the abstract one of the most intricate of mechanical agents��that is, its action is more difficult to analyse than that of many complex machines involving trains of mechanism; yet our familiarity with hammers causes this fact to be overlooked, and the hammer has even been denied a place among those mechanical contrivances to which there has been applied the name of "mechanical powers."