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TWO:8. The expense of the appliances of distribution and their maintenance."Forget this," he said, sternly. "Put it from your mind, as I shall do. It is a passing madness. My future wife would blush if she could hear you."

TWO:"The telephone for me," said Bruce. "I hope I shan't have to go out tonight. I'll get you to excuse me for a moment. . . . Are you there?"

TWO:(1.) Into what classes can gearing be divided?��(2.) What determines the wearing capacity of gearing?��(3.) What is the advantage gained by employing wooden cogs for gear wheels?��(4.) Why are tangent or worm wheels not durable?

TWO:I must not take that sort of thing amiss. Who knew with how much pain and how long he had been lying there, facing death, but fearing it too.235 At last someone came near, and he put all his hope in that man, but a hope that vanished. Yes, I can quite understand that a man in those conditions goes mad.

TWO:"General Leman, Commander Naessens, and all the officers were splendid in their imperturbable courage. They found the words that went straight to the hearts of their men. These fellows looked more like bronze statues than human beings. The projectiles hammered at the walls and smashed huge pieces, penetrating into the parts near the entrance. The rest of the fort withstood splendidly the hurricane of hostile steel and fire. During the night the bombardment stopped, and then the commanding officer went to inspect the cupolas.

TWO:Jeff leveled and their engine roared. In a quartering course, evidently making in an airline for some point on the Connecticut side of Long Island Sound, the seaplane held its way.A pressure wheel, like a steam-engine, must include running contact between water-tight surfaces, and like a rotary steam-engine, this contact is between surfaces which move at different rates of speed in the same joint, so that the wear is unequal, and increases as the speed or the distance from the axis. When it is considered that the most careful workmanship has never produced rotary engines that would surmount these difficulties in working steam, it can hardly be expected they can be overcome in using water, which is not only liable to be filled with grit and sediment, but lacks the peculiar lubricating properties [41] of steam. A rotary steam-engine is in effect the same as a pressure water-wheel, and the apprentice in studying one will fully understand the principles of the other.

TWO:"Never mind that yet. I didn't get this information from you. Behold the picture! You are sitting in your room on the night previous to the murder--a few hours before it in fact. Enter to you a more or less picturesque individual who tells you a story of a picture. It is an heirloom in his family. The family have had to part with it in their dark days. Now the same picturesque individual has become rich. Imagine his delight when he sees this family treasure in a shop window."For loading and unloading carts and waggons, the convenience of the old outside sling is well known; it is also a well-attested fact that accidents rarely happen with sling hoists, although they appear to be less safe than running platforms or lifts. As a general rule, the most dangerous machinery for handling or raising material is that which pretends to dispense with the care and vigilance of attendants, and the safest machinery that which enforces such attention. The condition which leads to danger in hoisting machinery is, that the power employed is opposed to the force of gravity, and as the force of gravity is acting continually, it is always ready to take advantage of the least cessation in the opposing force employed, and thus drag away the weight for which the two forces are contending; as a weight when under the influence of gravity is moved [65] at an accelerated velocity, if gravity becomes the master, the result is generally a serious accident. Lifting may be considered a case wherein the contrivances of man are brought to bear in overcoming or opposing a natural force; the imperfect force of the machinery is liable to accident or interruption, but gravity never fails to act. Acting on every piece of matter in proportion to its weight must be some force opposing and equal to that of gravity; for example, a piece of iron lying on a bench is opposed by the bench and held in resistance to gravity, and to move this piece of iron we have to substitute some opposing force, like that of the hands or lifting mechanism, to overcome gravity.

TWO:II.