368 



FOKESTEY INVESTIGATIONS U. S. DEPAETMENT OF AGEICULTUEE. 



/qpao 



/8fiOO 



/7000 



/6.000 



/£000 



o 



a 



09 



Ph 

 <D 

 P* 

 00 



a 



o 



(O 

 ■M 



ft 



s 



CO 



/-*m? 



/300O 



/SOOO 



S ' 



/*w 



t3 

 B 

 09 



S3 



/^w 



9000 



8000 



7000 



eooo 



35 40 4S 



Weight per cubic foot in pounds. 



3?ig. 96.— Relation of weight to bendiug strength at rupture. The figure at each point indicates the species thereby 



represented. 



