Show few rc A W for to nad bureau of mines says careful handling will bring results re suits from various fuels washington acceptable substitutes for anthracite are available so ft that an AD intelligent people using intelligent brat rug methods can face the prospect of an anthracite famine with equanimity according to the bureau of mines that federal agency which be has been giving much study to the subject and has las been making experiments report reports that the greater dumber number of homes in this country are heated by bituminous coal other substitute fuels which can be e drawn upon in case of a 2 bard coal shortage are cole cokes fuel oil braquet bri and steam sizes of anthracite when one has ha learned teamed to use coke the service obtained is I 1 comparable in many ways with anthracite says A report by 0 P hood chief mechanical engineer of the bureau of min mines es there are those that even prefer cole coke it Is clean to handle smokeless and under proper damper control give gives a steady heat cote coke ie Is so much more bulky than anthracite that the bin will not hold bold as many tons tor a deliveries dell serles must usually be made more often and arid the furnace roust must be filled more frequently knack in burning coke there Is a enack in burning bu ming loke toke also that must be acquired at the ex pense of a little patience and thought some coke does not kindle quite as readily ai as anthracite but 0 once nee pin ping the he ire I 1 Is apt to bum too fat fast unless clec checked ked the coke cole bed lies lie to 0 o lightly that air goes through easily and the porous structure of the coke gives a very large surface for burning thi this all means a R little more care and under standing andIng at in managing dampers it ll 11 aleo also necessary that there be no opportunity for air to leak into the aih ash pit hen lien th the e ash A eh pit ill t d dampers alpers a are re clo closed sed else the coke will burn bum novt when the draft la to apparently cut OIL when bituminous or aitt coal li to mentioned many new england people think of the fuel used in pittsburgh and the central west and cf the con slant stant tight fight to reduce the smoke nuisance one of the most effective renje die dies for domestic moke smoke in those district districts Is the use of low volatile or to called smokeless coal and that Is the kind of soft coal most readily available to liew england bituminous coal available the low volatile coals from central pennsylvania and west virginia running from 18 16 to 25 per cent volatile matter are naturally tributary to the eastern anthracite using district these them coals while not as clean to handle as anthracite can be burned nearly in domestic beating equipment no change in grates or Is needed to bum bituminous coal in furnaces heretofore using anthracite what Is needed Is more attention and a better knowledge of the problem ot of burning the flue due surfaces must be cleaned often with high volatile coal even dally and with low volatile at least weekly more hea heat from soft coal 11 hen the higher volatile bituminous coals are fired the amount of gas att gen erat crated edat at first Is so great that an extra amount of air ajr Is needed for a short time to burn these apses this air can be supplied through the damper in the firing door or if it the fire has been ery hot and the them gas Is excess excessive ire by leav t caving the firing door lightly slightly open fo a fw minutes after putting on fresh coal cost anthracite has the quality of burn hum leg very efficiently at low rates keening a small steady fire for mild day days un on very cold day days when running a hot fire are the efficiency alls falls off bituminous coal act in the tbs opposite way tray it requires more mom skill and Is less efficient in mild weather but Is even more efficient in cold weather than anthracite take it the season through from to 10 to 25 per cent more bituminous coal la Is likely to be needed than then of anthracite although with increased skill and attention teri tion the proportion might even be reversed I 1 there nere are other substitutes that may be had locally there Is an increasing crea slog amount of good fuel available this I 1 is handled ille re anthracite th requires little added attention and the satisfaction resulting depends upon the quality of 0 the braquet bri |