187 



■V ' 





'i 



Fig. 66. Test No. A12. Section of oak tie, treated with antimony triciilciride by Arent Labora- 

 tories, after 25 months' exposure at the Southern Pacific Oakland Mole. 





Fig. 67. Test No. B12. Sample of loblolly pine treated with antimony trichloride by Arent Labora- 

 tories, (middle), compared with untreated pine and untreated fir on either side; all exposed 16' 2 months 

 at Pier 7, San Francisco. 



