RELATI02T OF SHRINKAGE; ETC., TO SPECIFIC GRAVITY. 



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0.25 0.50 0.75 



SPECIFIC GRAViTY 



1.0 



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0.25 0.50 0.75 



SPECIFIC GRAVITY 



1.0 



(a) Hardness- End Surface 



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SPECIFIC GRAVITY 



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6.25 0.50 0.75 



SPECIFIC GRAVITY 



1 TO GrA99I 



Fig. 4. 



In order that the relation between specific gravity and each of the 

 various mechanical properties of wood may be easily put to practical 

 use, the relation, both for green and for air-dry material, is given in 

 the form of an equation (Table 1) and, in addition, in the form of a 

 curve (figs. 1 to 4). 



