Show Gases In Coke The silvery luster shown by many of the best grades of ot coke is s said to be 1 due principally to the decomposition of ot some somo of ot the gases evolved during tho the process coking of and the deposition tion o 0 o n a thin of f pure sure carbon on th the surface surface of the coke cok coke cells celia This thin co coating Ung protects the tho cells from alteration al aI- In tl tl all ajr and and 4 d is 18 accountable is-accountable j for the durability shown by ay I cokes |