Pearson. — Note on Antiseptic Treatment of Timber. 
1 
DIAGRAM IV. 
DURABILITY TESTS OF SPECIMENS TREATED WITH ATLAS, BELLIT, 
SODIUM FLUORIDE AND CHLORIDE OF ZINC. AND HYLINIT. 
Black Lines denote Treated Specimens “ 7”’ 
Bed „ „ Untreated „ “U n 
“S" denotes sound 
“ SD ’’ „ slightly damaged 
“ D " „ damaged but still serviceable 
“ B " „ rejected and unserviceable 
“ M ” „ missing 
R. 8. PEARSON, 
Forest Economist. 
July, U17 —s 
