ONE:Leona Lalage flew up into her own room. She was going to do a desperate thing. She had always recognised the fact that at some time or other it might be necessary to disappear suddenly and mysteriously from the brilliant field, and that is not possible even to the cleverest without money. Desperately needy as she had been more than once lately, she had never broken into the little reserve that she kept for emergencies."Mamie," Hetty said simply. "The child has been greatly frightened. She is calling for you. Will you please go up at once?"
FORE:A proof of this proposition is furnished in the case of standard machine tools for metal-cutting, a class of machinery that for many years past has received the most thorough attention at the hands of our best mechanical engineers.
FORE:To make this plainer, the laws of forces, the proportion of parts, strength of material, and so on, are subjects of general knowledge that may be acquired from books, and understood without the aid of an acquaintance with the technical conditions of either the mode of constructing or the manner of operating machines; but how to construct proper patterns for castings, or how the parts of machinery should be moulded, forged, or fitted, is special knowledge, and must have reference to particular cases. The proportions of pulleys, bearings, screws, or other regular details of machinery, may be learned from general rules and principles, but the hand skill that enters into the manufacture of these articles cannot be learned except by observation and experience. The general design, or the disposition of metal in machine-framing, can be to a great extent founded upon rules and constants that have general application; but, as in the case of wheels, the plans of moulding such machine frames are not governed by constant rules or performed in a uniform manner. Patterns of different kinds may be employed; moulds may be made in various ways, and at a greater and less expense; the metal can be mixed to produce a hard or a soft casting, a strong or a weak one; the conditions under which the metal is poured may govern the soundness or shrinkage,things that are determined by special instead of general conditions.Somebody had found her out. It must be so, because all her plans were anticipated by the terrible antagonist who worked in the dark. Her case was much like that of a despairing criminal who takes one huge sum to conceal the loss of another until the inevitable crash comes.
FORE:CHAPTER XXXI. AN URGENT CALL.It is better to have two boards, so that one may be used for sketching and drawing details, which, if done on the same sheet with elevations, dirties the paper, and is apt to lower the standard of the finished drawing by what may be called bad association.
