THE WOOD AND ITS MECHANICAL PKOPERTIES. 



49 



stock. Thus the inspector or buyer of hickory should discriminate 

 against timber that has more than 20 rings per inch. Exceptions 



STRENGTH AT MAX/MUM LOAD 

 ^ fe 



5 O 



S S> 



BENO/NG WORK TO MAX/ MUM LOAD 

 5 8 fe S 



exist, however, in the case of normal growth upon dry situations, in 

 \vliich the slow-growing material may be strong and tough. 



