STRENGTH AND TESTING OF TIMBER 



307 



similar law, but not to increase quite so rapidly, the ratios 

 being as follows : 



The elastic limit increases with the strength, the ratios 

 being : 



The timber with 12 per cent, of moisture was air dried, 

 that with 3 per cent, was kiln dried. 



The following tables, extracted from those of Mr. Tiemann, 

 show how remarkably regular is the increase in the strength 

 of timber as the moisture is extracted from it. 



x 2 



