SCALE INSECTS, EXTERMINATION OF: See Insecticides.
SCALP WASHES: See Hair Preparations.
SCISSORS HARDENING: See Steel.
SCOURING LIQUIDS: See Laundry Preparations.
SCRATCH BRUSHING: See Plating, under Gilding.
SCREWS:
To Prevent Screws From Rusting And Becoming Fast.
A screw rusted in may also be removed by placing the flat extremity of a red-hot rod of iron on it for 2 or 3 minutes. When the screw is heated, it will be found to turn quite easily.
SCREWS, BLUEING: See Steel.
SCREWS IN WATCHES: See Watchmakers’ Formulas. {630}