2 BULLETIN" 286, TJ. S. DEPARTMENT OF AGRICULTURE. 



MATERIAL TESTED. 



The material for test was selected from regular stock, in the form 

 of sticks 8 inches by 16 inches in section and from 28 to 32 feet in 

 length. The sticks were sorted in pairs, with the object of having 

 those in each pair as alike as possible. At the time of treatment 

 each stick was cut into two stringers of equal length, making four 

 test stringers in each group, two butt cuts and two second or top 

 cuts. The groups were handled as shown in figure 1, the butt ends in 

 one group being treated and the top ends in the next. 



LONGLEAF AND LOBLOLLY PINE. 



The longleaf and loblolly pine timber were cut in southern Missis- 

 sippi and Louisiana. About five months elapsed between the time 



Gfioupl 



Treated as received and 

 / tested immediately 



7esfed as received £ 



6 



Treated as rece/ved ar?d 

 J seasoned £e/~ore test/nf 



■Seasoned 6e/o re test/ha ^ 



$ Tested as received 



Treated as received and 

 tested i/nmediafe/y e 





y Seasoned" iefore testirif 



Treated as received and 

 •Seasoned sbefore tsstt'no 3 



G/foupJE 



a/b— Diskj"th'cic, cut -from center to determine moisture 



Fig. 1. — Method of cutting and marking test material. 



the logs were sawed and the time of treatment, during four months 

 of which the pieces were seasoned in an open pile. The treated 

 stringers were en route to Lafayette, Ind., for over a month. Upon 

 arrival they were close piled under shelter until the tests were started 

 about a month later. The pieces as selected were 8 inches by 16 

 inches in section by 28 feet long. The material classed as "long- 

 leaf" was high-grade timber, considered as first-class structural 

 material by the railway officials, and that classed as "loblolly" as 

 less valuable. The longleaf had only a small per cent of sap and 

 was of comparatively slow growth, while the loblolly averaged over 

 30 per cent sapwood, was of more rapid growth, and contained more 

 knots. The number of test stringers 14 feet long was as follows: 



