400 



THE TIMBERS OF THE WORLD 



temperatures and humidities being maintained in each zone. With this, 

 however, the ease of working attainable with a progressive dryer is 



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HEATER 



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PLAIi OF 



THREE ZONE KILM. 



TIMBER ON TRUCKS IS GIVEN A PE.RIOD FIRST IN THE MOIST 

 ZONE.TXEN IN THE WARM & FINISHED IN THE. HOT ZONE 



missed, without gaining the advantages of a properly designed compart- 

 ment dryer. 



