SAWMILLS. 



493 



in it can be removed easily and another with freshly-sharpened 

 saws substituted. 



The best steam saws have a play of 30 to 50 centimeters 



o 



Kjir. HOI. Multiple snw. 



(12 to 20 inches), giving 200 to 300 cuts a minute. For 

 sawing coniferous woods they have very thin blades with 

 scarcely any set ; they turn out planking, whenever a large 

 quantity of raw material is available, at rates scarcely dearer. 



