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Page 220 - on parade, let the butt be brought gently to the ground, especially when the exercises take place on pavements or hard roads. This will save the mechanism of the lock from shocks, which are very injurious to it, and which tend to loosen and mar the screws and split the wood-work.
Page 486 - very different. Gray iron is softer and less brittle than white iron; it is in a slight degree malleable and flexible, and is not sonorous; it can be easily drilled and turned in the lathe, and does not resist the file. It
Page 52 - cover it with a layer of screened sand. Make the bottom of the pile with a tier of unserviceable balls buried about two-thirds of their diameter in the sand ; this base may be made permanent : clean the base well and
Page 570 - The unit of heat is the quantity of heat necessary to raise the temperature of 1 Ib. of water at its maximum density 1°.
Page 218 - of water (warm, if it can be had) into the muzzle; let it stand a short time, to soften the deposit of the powder ; put a plug of soft wood into the muzzle, and shake the water up and down the barrel well: pour this
Page 290 - Barrels of powder should not be rolled for transportation : they should be carried in hand-barrows, or slings made of rope or leather. In moving powder in the magazine, a cloth or carpet should be spread ; all
Page 578 - In a system of n movable pulleys, the power is to the weight as the product of the radii of the pulleys is to the product of the chords of
Page 218 - To clean the exterior of the barrel, lay it flat on a bench or board, to avoid bending it. The practice of supporting the barrel at each end and rubbing it with a strap or