Bulletin No. 8, Division of Forestry. 



Plate VII. 



RELATIVE MODULUS OF RUPTURE IN LBS. PER SQ.IN 



Fig. 1. — Diagram sho-wing the increase in the mndnlns of rupture in cross-breaking, with decrease in percentage 



of moisture. 



Fici.2. — Diagram showing the increase in the modulus of strength at the elastic liuiil, with decrease in the 



percentage of moisture. 



