TABLE ]. 

 REDUCTION CF PROTECTION AGAINST RORKRS AS A RESULT OF LEACHING , 

 AS SH0.7N BY FIELD EXPOSURE TESTS^ 



t 



TREATIffiNT 



i ': Boiled "I " ' ~ ' | Hydro- i^'cTl '^ ' ' jaodium 

 fUN- iin f Potassium' I chloric* Held in Uerated Hydrox- 

 [LEA CHEDlSeawateriDicfaromateJA c id isearj-ateriSea?.rater|ide 



CREOSOTE 



Fouling 



Licinoria 



Shipwormsi 





 

 



2-3 

 

 1 





 









 

 





 







UNTREATED 



Fouling t h 

 Liianoria | 

 Shipwormsi 



2 

 1 



1 



2-3 

 1 

 2 



2 

 1 

 1 



1 

 1 

 1 





 







2 

 1 



2 





 

 



2 

 1 

 1 



Leaching period 18 days 



No attack 3 Moderate 



1 Very light h Heavy 



2 Light 



TABLE 2 

 REDUCTION OF ANTI-BORER PROPEl^TIES BY LFACHING , 

 AS SHOM BY LABORATORY TEST WITH LARVAE, IN MMTES 



J - 3 



