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Part II.] Pearson: Antiseptic Treatment of Timber. 
timber with a salt, generally a cheap process, and protecting the salt 
from being washed out of the timber or volatilizing under excessive 
temperature by a further treatment with a small quantity of one of 
the more expensive antiseptic oils. 
Proposed various combinations with which to treat timber:— 
*1. Zinc chloride and green oil, the timber being immersed in a solu¬ 
tion of the former and when dry painted over with the latter. 
2. Zinc chloride and Avenarius Carbolineum and to be treated in the 
same way as No. 1. 
3. Bdllit and Jodelite to be treated in the same way as No. 1. 
d. Atlas and tar to be treated in the same way as No. 1. 
5. The experiments with Sodium-fluoride and Zinc chloride are 
already under way on a laboratory scale and should be continued. 
Other antiseptic solutions, such as Cresoyle, B611itol, Hylinit, 
Anthrol, Afral, Ant if or mine, Antigermine, Lysol, etc., will be taken up 
as opportunity offers. 
*Note.—P roposals to treat 1,500 sleepers of five different specie s by this method 
are now under consideration. 
