such as to insure the greatest durability and strength. ef reciprocal tension, and so they must present a greater The main frame or stand is a solid and strong casting in one piece, forming a rigid and solid support for the material When a newly drawn wire is heated, the reciprocal tension and the… … ing on iron various designs of different cclors, ““mer to avoid these false tones. It would in and imitating vitro-enamel in the following this case be of no use to diminish the dead- manner: A crystalline appearance is given to ening of the trumpet metal by a temporary heating, for this process…
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