NICKEL-TESTING.
Pure nickel will remain nearly white, while “patent nickel,” or nickel-copper will not retain its primitive brilliancy, but soon becomes slightly oxidized and grayish in color. The magnet furnishes a good means of testing. The unadulterated nickel is distinctly sensitive to magnetism, while that much alloyed is destitute of this property.
NICKEL ALLOYS: See Alloys.
NICKEL, TO REMOVE RUST FROM: See Cleaning Preparations and Methods.
NICKEL-PLATING: See Plating.
NICKEL STEEL: See Steel.
NICKELING, TEST FOR: See Plating. {482}
NIELLO: See Steel.
NITROGLYCERINE: See Explosives.
NOYAUX LIQUEUR: See Wines and Liquors.
NUT CANDY STICKS: See Confectionery.
NUTMEG CORDIAL: See Wines and Liquors.
NUTMEG ESSENCE: See Essences and Extracts.
OAK: See Wood.
ODONTER: See Dentifrices.