ALIAVYESD DISIDAdS AYG 40 WHIIYW907 
ee ee ee | : Ie 
are) oo w @ @ ry IN RS rs 
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65977°—19. (To precede page 9.) No, 4, 
N es io cS) = 
LOGARITHM OF MODULUS OF RUPTURE - GREEN 
Fie. 9. 
