1. A VAPOR GENERATOR COMPRISING: (1) A CONTAINER OPEN AT ONE END (A) HAVING A HEATING MEANS ASSOCIATED THEREWITH (B) THE OPEN END OF THE CONTAINER COMMUNICATING WITH THE INLET OF (2) AN ELONGATED TUBE (A) HAVING DISPOSED THEREIN A PLURALITY OF STAGGERED BAFFLES WHICH TOGETHER WITH THE INNER WALLS OF THE TUBE FORM A RANDOMLY DIRECTIONAL PATH THROUGH SAID TUBE FOR VAPORS PASSING INTO THE ELONGATED TUBE FROM THE CONTAINER (B) SAID TUBE HAVING ASSOCIATED THEREWITH A HEATING MEANS FOR HEATING OF THE ELONGATED TUBE AND CONTAINED BAFFLES SO AS TO HEAT VAPORS PASSING THERETHROUGH, SAID HEATING MEANS HAVING A HIGHER HEATING CAPACITY THAN THE HEATING MEANS ASSOCIATED WITH THE CONTAINER SO AS TO HEAT MATERIAL VAPORIZED FROM THE CONTAINER TO A HIGHER TEMPERATURE IN THE ELONGATED TUBE, AND SAID TUBE HAVING AN OUTLET AT ITS OPPOSITE END COMMUNICATING WITH THE INLET OF (C) A VAPOR DISCHARGE MEANS TERMINATING IN AT LEAST ONE DISCHARGE OPENING FOR DISCHARGING HEATED VAPORS.