1. A METHOD OF BURNING IN A FURNACE DOMESTIC AND INDUSTRIAL REFUSE OF BULKY CONDITION AND VARYING PHYSICAL AND CHEMICAL PROPERTIES, SAID METHOD INCLUDING THE STEPS OF: PLACING THE TOTAL REFUSE TO BE BURNED INTO THE ACTUAL COMBUSTION CHAMBER OF THE FURNACE; FORMING SAID TOTAL REFUSE INTO ONLY A SINGLE LAYER OF SUBSTANTIALLY UNIFORM THICKNESS; PRE-DRYING SAID SINGLE REFUSE LAYER ON A PRE-DRYING GRATE WITHIN SAID COMBUSTION CHAMBER; TRANSFERRING SAID SINGLE REFUSE LAYER ONTO A COMBUSTION GRATE, SAID COMBUSTION GRATE INCLUDING INITIAL AND FINAL PORTIONS; SUPPLYING HOT GASES TO A LOCATION BENEATH SAID INITIAL PORTION OF SAID COMBUSTION GRATE, SAID HOT GASES HAVING A TEMPERATURE AT LEAST EQUAL TO THE IGNITION POINT OF A SUBSTANTIAL PORTION OF SAID SINGLE REFUSE LAYER; PASSING SAID HOT GASES UPWARDLY THROUGH SAID INITIAL PORTION OF SAID COMBUSTION GRATE AND COMPLETELY THROUGH SAID SINGLE REFUSE LAYER TO THEREBY IGNITE FROM BELOW AT LEAST A SUBSTANTIAL PART OF SAID SINGLE REFUSE LAYER ON SAID INITIAL COMBUSTION GRATE PORTION; INTRODUCING SECONDARY AIR LATERALLY INTO SAID COMBUSTION CHAMBER AT A LOCATION ABOVE SAID INTIAL COMBUSBUSTION GRATE PORTION SO AS TO BURN AT SAID LOCATION VOLATILE CONSTITUENTS EXPELLED FROM GRATE PORTION; AND COMPLETELY BURNING THE SINGLE REFUSE LAYER DISPOSED UPON SAID FINAL PORTION OF SAID COMBUSTION GRATE.