52/101 46 .-- Designs of tension test specimens used in United States.] [Footnote 61: Bul.No. 8: Timber physics, Part II., 1893, p. 7.] The difficulty of making such tests compared with the minor importance of the results is so great that they are at present omitted by the U.S.Forest Service. A form of specimen is suggested, however, and is as follows: "A rod of wood about one inch in diameter is bored by a hollow drill from the stick to be tested. |