RESISTANCE OE HARDWOODS TO CREOSOTE. 



25 





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x: 













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25 50 



PRESSURE 



75 100 125 



■LBS. PER SQ. m. 



150 

























































































































































36 

























































WILD RED CHERRY 























































































































































































































































































6 as 



































































































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8 







































































































































































































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FOREST PRODUCTS LABORATORY 























: 





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0. 



r!. 



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iS'S 



25 50 75 800 !25 



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 wood of tupelo gum. 



























[ 

























































































































38 

























I 







































ROCK ELM 







































































































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