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1. A COMBINED AMMONIATOR-GRANULATOR APPARATUS FOR PREPARING FERTILIZER AND SIMILAR MATERIALS, COMPRISING STRUCTURE DEFINING A CONTINOUS ROTATABLE DRUM MOUNTED TO SLOPE DOWNWARDLY FROM THE HORIZONTAL TO PROGRESS MATERIAL THERETHROUGH UPON AXIAL ROTATION THEREOF, SPACED ROLLER MEANS FOR SUPPORTING SAID CONTINUOUS DRUM FOR AXIAL ROTATION ABOUT ITS LONGITUDINAL AXIS, MEANS INCLUDING A SINGLE CHAIN DRIVE AND A SINGLE POWER SOURCE CONNENCTED THERETO FOR ROTATING SAID CONTINUOUS DRUM, A CLOSURE FOR THE INLET AND OUTLET ENDS OF SAID CONTINUOUS DRUM EACH HAVING AN OPENING THEREIN, AN INLET CHUTE AND AN OUTLET CHUTE FOR SAID INLET AND OUTLET ENDS OF SAID CONTINUOUS DRUM COMMUNICATING WITH THE RESPECTIVE OPENINGS IN THE CLOSURES THEREOF, SAID INLET CHUTE BEING UTILIZED TO INTRODUCE DRY FERITILIZER MATERIAL INTO SAID CONTINUOUS DRUM ALONG THE LONGITUDINAL AXIS THEREOF, AN ANNULAR RETAINING RING FOR DIVIDING THE INTERIOR OF SAID CONTINUS DRUM INTO AN INTEGRAL AMMONIATOR SECTION AND A GRANULATOR SECTION, STRUCTURE DEFINING AT LEAST TWO SPACED INLET PASSAGEWAYS LOCATED BELOW THE INNER EDGE OF SAID RETAINING RING AND TERMINATING SHORT THEREOF AND ARRANGED SUBSTANTIALLY PARALLEL TO THE INNER WALL OF SAID AMMONIATOR SECTION FOR INTRODUCING LIQUID CHEMICALS INTO SAID AMMONIATOR SECTION, WITH SAID DRY FERTILIZER MATERIAL BEING MIXED WITH SAID CHEMICALS DUE TO THE LOCATION OF SAID INLET PASSAGEWAYS BELOW THE EDGE OF SAID RETAINING RING, SAID RETAINING RING BEING ARRANGED TO CAUSE A BED OF MIXED AMMONIATED FERTILIZER MATERIAL TO BUILD UP WITHIN SAID AMMONIATOR SECTION, A FIXED SCARPER BLADE RUNNING LENGTHWISE OF SAID AMMONIATOR SECTION AND SPACED DIAMETRICALLY OPPOSITELY FROM SAID INLET PASSAGEWAYS AND FROM THE INNER WALL OF SAID AMMONIATOR SECTION OF SAID TUBULAR MEMBER FOR SCRAPING THE MIXED AMMONIATED FERTILIZER MATERIAL FROM THE INNER WALL OF SAID AMMONIATOR SECTION UPON ROTATION THEREOF, SAID MIXED AMMONIATED FERTILIZE MATERIAL BEING GRADUALLY MOVED OVER SAID RETAINING WALL INTO SAID GRANULATOR SECTION OF SAID TUBULAR MEMBER FOR GRANULATION THEREOF DUE TO THE ROTATION OF SAID TUBULAR MEMBER, SAID GRANULAR SECTION INCLUDING A PLURALITY OF LONGITUDINALLY EXTENDING COMPARTMENS ARRANGED IN SERIES ALONG THE LONGITUDINAL AXIS OF SAID TUBULAR MEMBER AS WELL AS A PLURALITY OF CIRCULARLY AND CONTIGUOUSLY IDENTICAL COM PARTMENTS SPACED ABOUT THE AXIS OF ROTATION OF SAID CONTINUOS DRUM AND LEAVING AXIALLY THEREBETWEEN A SUBSTANTIALLY CIRCULAR OPEN SURFACE HARDENING AREA FOR THE HARDENING OF SAID MIXED AMMONIATED FERTILIZER MATERIAL INTO GRANULES AS IT MOVES TOWARD THE OUTPUT END OF SAID CONTINOUS DRUM, WITH EACH COMPARTMENT HAVING A SUBSTANTIALLY PLANE ROLLING WALL AND AN OPPOSING RETAINING WALL, THE ROLLING WALL OF EACH COMPARTMENT BEING SUBSTANTIALLY TANGENTIAL TO THE SURFACE HARDENING AREA AND JOINING THE RETAINING WALL OF THE ADJACENT COMPARTMENT, AND THE SAID RESPECTIVE WALLS OF THE SEVERAL COMPARTMENTS BEING SPACED IN THE SAME ORDER ABOUT SAID SURFACE HARDENING AREA, WITH SAID AMMONIATED FERTILIZER MATERIAL INTRODUCED INTO SAID GRANULATOR SECTION OF SAID CONTINUOUS DRUM BEING GRANULATED THEREIN, MEANS FOR INTRODUCING AIR INTO SAID AMMONIATOR SECTION FOR MIXING WITH THE HOT GASES LIBERATED DURING THE AMMONIATING OF THE REACTION MATERIALS THEREIN AND FOR COOLING OF SAME DURING THE PASSAGE THEREOF TO THE OUTLET END OF SAID CONTINUOUS DRUM, MEANS FOR DRAWING THE REACTION GASES FROM THE AMMONIATOR SECTION THROUGH SAID CONTINUOUS DRUM FOR HARDENING THE GRANULES OF MATERIAL AS THEY ARE GRANULTED AND CASCADED FROM COMPARTMENT TO COMPARTMENT AND ROLL OVER THE SURFACE HARDENING AREA OF SAID GRANULATOR SECTION PRIOR TO BEING DISPOSED THROUGH SAID OUTLET CHUTE, AND MEANS INCLUDING WEIGHTS POSITIONED ADJACENT THE OUTER SIDES OF THE COMPARTMENTS AND MOVABLE ALWAYS IN A DIRECTION OPPOSITE TO THE DIRECTION OF ROTATION OF SAID CONTINUOUS DRUM FOR CONSECUTIVELY STRIKING THE EDGES OF THE COMPARTMENTS TO RELEASE MATERIAL FROM THE COMPARTMENTS AND CAUSE REVERBERATIONS THROUGHOUT THE ENTIRE APPARATUS TO SPEED THE CHEMICAL REACTION AND MAINTAIN SUSPENSION OF SAID MATERIAL, WITH THE AMMONIA GASES, HEAT OF REACTION, MOISTURE TUMBLING AND AGITATION BEING A COMMON CHEMICAL LINKAGE IN ONE DIRECTION OF MOVEMENT OF THE MATERIAL AND WITH THE TELEGRAPHING OF THE WEIGHT-DROPPING BLOWS REVERBERATING BACK TO THE INCOMING MATERIAL BY THE CONTINUOUS DRUM BEING A COMMON LINKAGE IN THE OPPOSITE DIRECTION OF FLOW OF THE MATERIAL, WITH SAID LINKAGES SERVING TO FACILITATE THE AMMONIATING, GRANULATING, AND PELLETIZING OF MATERIAL IN SAID DRUM