MECHANICAL PROPERTIES. TABLE 74. Hardwoods Grown in U. S. (English Units). 



NOTE. Results of tests on sixty-eight species; test specimens, small clear pieces, 2 by 2 inches in section, 30 

 bending; others, shorter. Tested in a green condition. Data taken from Bulletin 556, Forest Service, U. S. Dept. 

 containing data on 130,000 tests. See pages 97 and 99 for explanation of columns. 



SMITHSONIAN TABLES. 



inches long tor 

 of Agriculture, 



