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Legend- 
A ~ Modulus of Ruplucc lac poles 
6 ~ rlher Jloess al Eladoc Lund toe poles 
C — Modulus of riupliUB ux small .clear 6ea/7zs cui Ica/n Tested pales 
8.— Relation of fiber stress of poles and modulus of rupture of small, clear beams cut from 
them to the modulus of rupture of poles. 
