CLAY n.
eous schist; argillite. -- Fatty clays, clays having a greasy feel; they are chemical compounds of water, silica, and aluminia, as halloysite, bole, etc. -- Fire clay , a variety of clay, entirely free from lime, iron, or an alkali, and therefore infusible, and used for fire brick. -- Porcelain clay, a very pure var…
COBALTIC a.
Pertaining to, derived from, or containing, cobalt; -- said especially of those compounds in which cobalt has higher valence; as, cobaltic oxide. Luteo-cobaltic compounds (Chem.), an extensive series of complex yellow compounds of ammonia and cobaltic salts. -- Roseo-cobaltic compounds (Chem.), an extensive series of…
COBALTOUS a.
Pertaining to, derived from, or containing, cobalt; -- said esp. of cobalt compounds in which the metal has its lower valence. Cobaltous chloride, a crystalline compound, CoCl2, of a pale rose color when hydrous, blue when dehydrated. Its solution is used for a sympathetic ink, the writing being nearly colorless when d…
COCKER SPANIEL n.
r retrieving game or for household pets. They usually weigh from eighteen to twenty-eight pounds. They have the head of fair length, with square muzzle, the ears long and set low, the legs short or of medium length, and the coat fine and silky, wavy but not curly. Various colors are bred, as black, liver, red, black an…