TWO:In working to regular scales, such as one-half, one-eighth, or one-sixteenth size, a good plan is to use a common rule, instead of a graduated scale. There is nothing more convenient for a mechanical draughtsman than to be able to readily resolve dimensions into various scales, and the use of a common rule for fractional scales trains the mind, so that computations come naturally, and after a time almost without effort. A plain T square, with a parallel blade fastened on the side of the head, [80] but not imbedded into it, is the best; in this way set squares can pass over the head of a T square in working at the edges of the drawing. It is strange that a draughting square should ever have been made in any other manner than this, and still more strange, that people will use squares that do not allow the set squares to pass over the heads and come near to the edge of the board."A score of these men were merely wounded and fell among the dead. For greater certainty the soldiers fired once more into the mass. A few got off scot-free in spite of the double fusillade. For over two hours they pretended to be dead, remained among the corpses without budging, and when it was dark were able to fly to the mountains. Eighty-four victims remained behind and were buried in a garden in the neighbourhood.
TWO:For the life of him Bruce could not say. It was absurd to suppose that by some mistake the Bank of England had issued two sets of notes of the same series of numbers. There was no mistake about the murdered man's letter either.
TWO:"Honestly," said Lawrence; "I was there and saw it. Isidore has a perfect figure memory, and spotted those numbers at once. But unfortunately it was impossible to identify the person who introduced the notes into the room, as there were so many of those bits of paper on the table. But I shall find out. I know what the enemy's next move will be."One of the earliest cares of an apprentice should be to divest his mind of what I will call the romance of mechanical engineering, almost inseparable from such views as are often acquired in technological schools. He must remember that it is not a science he is studying, and that mathematics deal only with one branch of what is to be learned. Special knowledge, or what does not come within the scope of general principles, must be gained in a most practical way, at the expense of hard work, bruised fingers, and a disregard of much that the world calls gentility.
- 水処理薬品
- 簡易?小型貫流ボイラ?貫流ボイラ向けに開発した純正ボイラ薬品。
TWO:In cutting screws it is best not to refer to that mistaken convenience called a wheel list, usually stamped on some part of engine lathes to aid in selecting wheels. A screw to [127] be cut is to the lead screw on a lathe as the wheel on the screw is to the wheel on the spindle, and every workman should be familiar with so simple a matter as computing wheels for screw cutting, when there is but one train of wheels. Wheels for screw cutting may be computed not only quite as soon as read from an index, but the advantage of being familiar with wheel changes is very important in other cases, and frequently such combinations have to be made when there is not an index at hand.For the Platonic Idea of Good, Aristotle had substituted his own conception of self-thinking thought, as the absolute on which all Nature hangs: and we have seen how Plotinus follows him to the extent of admitting that this visible universe is under the immediate control of an incorporeal Reason, which also serves as a receptacle for the Platonic Ideas. But what satisfied Aristotle does not fully satisfy him. The first principle must be one, and Nous fails to answer the conditions of absolute unity, Even self-thinking thought involves the elementary dualism of object and subject. Again, as Plotinus somewhat inconsistently argues, Nous, being knowledge, must cognise something simpler than309 itself.458 Or, perhaps, what he means is that in Nous, which is its product, the first principle becomes self-conscious. Consciousness means a check on the outflow of energy due to the restraining action of the One, a return to and reflection on itself of the creative power.459
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