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28 - JEWELS (eont) one gallon of water, one quart of concentrated ammonia, one-fourth "bar of Ivory soap and four tablespoons of baking soda* This solu­tion Is prepared by boiling the water until the soap is dissolved and then adding the ammonia and baking soda and mixing thoroughly. After brushing with the cleaning solution they may be dipped in alcohol and dried in sawdust. Cracked jewels may be returned to the manufacturer so that the brass cases can be utilized in the manufacture of new jewels* LADDERS, EXTENSION Broken rungs should be replaced, side rails made smooth if not too badly worn, top sections sometimes cut back to shorter lengths, t V and feet sharpened* LADDERS, MANHOLE May be repaired and painted* LADDERS, STEP May be repaired and painted* LADLE, MELTING Straighten handle, dean, reweld handle to bowl* LAG SCREWS See SCREWS, LAG LAMPS, STREET LIGHTING Series incandescent lamps removed on group replacement should be inspected for appearance of filaments. Many without defects such as broken, vaporized or crystallined filaments may be re-used for replacements between group replacements*