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TWO:Tools should never be tempered by immersing their edges or cutting parts in the bath, and then allowing the heat to "run down" to attain a proper temper at the edge. I am well aware that this is attacking a general custom, but it is none the less wrong for that reason. Tools so hardened have a gradually diminishing temper from their point or edge, so that no part is properly tempered, and they require continual re-hardening, which spoils the steel; besides, the extreme edge, the only part which is tempered to a proper shade, is usually spoiled by heating and must be ground away to begin with. No latheman who has once had a set of tools tempered throughout by slow drawing, either in an oven, or on a hot plate, will ever consent to point hardening afterwards. A plate of iron, two to two and one-half inches thick, placed over the top of a tool dressing fire, makes a convenient arrangement for tempering tools, besides adding greatly to the convenience of slow heating, which is almost as important as slow drawing. The writer has by actual experiment determined that the amount of tool dressing [117] and tempering, to say nothing of time wasted in grinding tools, may in ordinary machine fitting be reduced one-third by "oven tempering."

TWO:"And she killed my brother," he said. "Oh, yes, there is no doubt about that. If I had not been a fool I should have been avenged last night."

TWO:

TWO:Not a single person was seen on the road, and everything went well until we got to the village of Veldwezelt. Suddenly, quite unexpectedly, a violent rifle fire and a continued whistling of bullets was heard from the neighbourhood of a house close by. Although the soldiers later on asserted to the contrary, I was sure that the firing did not come from the house, but from some underwood near by.

TWO:ROUND ABOUT LI��GE

TWO:Text-books, such as relate to construction, consist generally of examples, drawings, and explanations of machines, gearing, tools, and so on; such examples are of use to a learner, no doubt, but in most cases he can examine the machines themselves, and on entering a shop is brought at once in contact not only with the machines but also with their operation. Examples and drawings relate to how machines are constructed, but when a learner comes to the actual operation of machines, a new and more interesting problem is reached in the reasons why they are so constructed.

TWO:He broke his sentence in the middle of a word because the queer knocking repeated itself, but with quick presence of mind he completed his phrase to steady Sandy, whose face was growing drawn with dismay.

TWO:"Yes, certainly. It will take time of course, but the damage done to the St. Rombout church214 and the palace is not irreparable; the church has suffered very much, the spire is less damaged."The Platonic influence told even more efficaciously on Galileo��s still greater contemporary, Kepler. With him as with the author of the Republic, mysticism took the direction of seeking everywhere for evidence of mathematical proportions. With what brilliant success the search was attended, it is needless to relate. What interests us here is the fact, vouched for by Arago, that the German astronomer was guided by an idea of Plato��s, that the world must have been created on geometrical principles.552 Had Bacon known anything about the work on which his adventurous contemporary was engaged, we may be sure that it would have afforded him another illustration for his Id?la, the only difficulty being whether it should be referred to the illusions of the Tribe, the Den, or the Theatre.