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As to the shades that appear in drawing temper, or tempering it is sometimes called, it is quite useless to repeat any of the old rules about "straw colour, violet, orange, blue," and so on; the learner knows as much after such instruction as before. The shades of temper must be seen to be learned, and as no one is likely to have use for such knowledge before having opportunities to see tempering performed, the following plan is suggested for learning the different shades. Procure eight pieces of cast steel about two inches long by one inch wide and three-eighths of an inch thick, heat them to a high red heat and drop them into a salt bath; preserve one without tempering to show the white shade of extreme hardness, and polish one side of each of the remaining seven pieces; then give them to an experienced workman to be drawn to seven varying shades of temper ranging from the white piece to the dark blue colour of soft steel. On the backs of these pieces labels can be pasted describing the technical names of the shades and the general uses to which tools of corresponding hardness are adapted.There was no sign of a servant to be seen anywhere. They had all packed up their boxes, and fled, as rats quit a sinking ship.
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  • FORE:In constructing patterns where it is optional whether to employ cores or not, and in preparing drawings for castings which may have either a ribbed or a cored section, it is nearly always best to employ cores. The usual estimate of the difference between the cost of moulding rib and cored sections, as well as of skeleton and cored patterns, is wrong. The expense of cores is often balanced by the advantage of having an 'open mould,' that is accessible for repairs or facing, and by the greater durability and convenience of the solid patterns. Taking, for example, a column, or box frame for machinery, that might be made either with a rib or a cored section, it would at first thought seem that patterns for a cored casting would cost much more by reason of the core-boxes; but it must be remembered that in most patterns labour is the principal expense, and what is lost in the extra lumber required for a core-box or in making a solid pattern is in many cases more than represented in the greater amount of labour required to construct a rib pattern.
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FORE:"I prefer to regard the lady for the present as Countess Lalage," said Lawrence. "But we can find a better place for discussion than this."We had got near the door of the room that stood ajar, and from there came the sound of a couple of girls' voices: "Hail, Mary.... Hail, Mary...."
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I have witnessed all the people during the very earliest days of the war. I came to Lige, passing between the forts, as described already. I was in Lixhe when the pontoon bridge was wrecked repeatedly by Fort Pontisse; I stayed at Vis three times before the destruction began, and I was there when the charming townlet was wrecked by fire; and in Louvain I have been dragged from my bed by six soldiers and arrested, when the whole town was still ablaze.Bending close, intent and eager, they read:"I came here with pretty bad news," he said, after a pause. "I went off with Isidore to talk business, and he let out something that absolutely startled me."
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