Page 6 Advertisements Column 2

New Zealand Herald, Volume XXI, Issue 7004, 29 April 1884, Page 6

What is gas coke ? Gas coke \b nearly r 1 ! carbon, and carbon properly burned will give ou* in ronnd numbers, 14,000 nnits of heat per ponnd, or very nearly as much as the best English steam coals. Indeed, coal only surpasses it because of the small quantity of hydrogen which it contains uncomblned with oxygen. It is often urged that coke cannot bo as good as coal necause it has lost all the heat-producing power equivalent to that of the gas drivi a of Jt is quite true that the coke resulting from one ton of coal does not possess the same calorific value as the coal from whiuh it was made. But it must be borne in mind that we are comparing coke with coal for wbioht. Thus, lOOlbs. of coal produces C6lbs. of coke: so that some SOcwt. of coal is required to produce ono ton of coke,'and tho difference satisfactorily allows for the heat producing power of the gas driven ff.* It is impoßsl to remain long sick or out 1q! health where Hop Bitters are used. Soo another.