34 BULLETIN 77, U. S. DEPARTMENT OF AGRICULTUEE. 



strength of the specimen was definitely influenced by the seasoning 

 cracks, even when more or less spiral. 



The beam failures were similar to those occurring in the caps. 

 The water-soaked material failed almost entirely in compression on 

 the upper surface, the failure wrinkles becoming visible shortly before 

 the maximum load was reached. Some of the green beams had a 

 very large deflection, and the stress-strain curves were typically 

 somewhat flat topped. The dry beams failed in tension, sometimes 

 accompanied by failure in compression. 



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