Show WHY BOILER BURSTS scientific explanation or 0 some rhen phenomena omena ot of the kitchen 13 when you hear the kitchen boiler cracking their Is no cause for alarm there Is a prevailing impression that tho the cracking Is produced by steam and that there Is therefore an increased pressure on the boiler at such times dut but this la is an error it if the boiler Is in good condition with the water turned on as usual so that the boiler Is kept llred filled the only pressure that it Is subjected to is tho the same as that in tho the water pipes from which of course there never Is the slightest danger and this Is true no matter how hot the water in the boiler may be the reason Is very simple As long as the tho boiler boller Is kept full of water there Is no room for steam it you open the hot water cock the water pours out and steam rises from it because it then has a chance to escape into tile the air in other words rapid evaporation takes place hut but as the hot water pours out water train the pipes rushes lushes in to take its place and thus thas the boiler Is kept full the cracking noise referred to Is heard when the water la Is unusually hot and Is nothing but the expansion ex ot of the boiler under the influence of that heat it la Is in no degree an indication ot of danger unless indeed tho the boiler Is worn out or defective which la Is a matter entirely outside of what we are now edw considering when a kitchen boiler explodes it Is generally because a fire has been kindled in the range while the boiler was empty it happens sometimes when people conle come back to town after spending the summer away the ire fire heats the boiler of course and when the water Is turned on it is converted suddenly and viole violently into steam and the boiler cannot stand the enormous pressure fortunately few persons aro arc thoughtless enough or silly enough to build a fire die before opening the cocks connecting the boiler with the water pipes |