Show tanbark aa A P fuel perhaps tho most important of waste fuels in tho the united states baa has been spent tanbark A rough estimate cell mate would mould indicate that this material SOD gon crated a tow ago an amount of steam that havo have otherwise required tho the yearly consumption ot or about tons of high corl copi yet this valuable fuel woe was at one time consi considered dared a mero detriment aad an expense to tho the leather industry it udo disposed of by lumping it into rivers filling in waste ground and by making roads with ith it often necessitating tho the paying out of large sums for its disposition thie strikingly illustrates a case of how tho the improvement of a furnace converted a hitherto sup into a valuable waste fuel of tho the auto c clans lave and how an enor enormous mods waste was converted into an equally great conomy cou rou omy engineering magazine |