MEGASS AS FUEL. 



The air necessary for combustion enters at /, the space h forming a hot air 

 reservoir ; the ashes are removed at i ; the boiler is shown at c. The passage 

 of gases is first through the tubes, thence to the smoke box A, back along the 

 sides and out underneath the boiler to the main flue g. In this design the flue 

 gases pass three times along the boiler, as opposed to the two way pass in the 

 Dutch oven setting. 



The Godillot furnace, Fig. 222, is a furnace of the Dutch oven type. The 

 megass enters at b, being propelled forward mechanically by the screw c ; the 

 fire bars are arranged to form three sides of a pyramid, shown at d ; air enters 

 at e, and /is an aperture for viewing the combustion. 



407 



