149 
Works— Continued. 
For operating Wellhouse process of treating 
timber to prevent washing out of antisep- 
tea, 86. 
For preserving timber, cost of establishing, 
88. 
Wood-preserving, at Chicago, 111., 87. 
Zinc, Chlorido-of, for preserving wood, 70, 81. 
Amount of solution absorbed by various 
woods, 81. 
Zinc, Chloride of— Continued. 
Cost of preserving timber with, 89, 91, 94. 
Methods of preventing washing out of, in tim- 
ber treated with, 85, 86,87. 
Strength of solution used for impregnating 
wood, 81. 
Works established for use of, 82. 
Zinc-creosote I'roeos of Heating timber to pre- 
vent escape of antiseptics, 87. 
Zinc-gypsum Process of treating timber to pre- 
vent escape of antiseptics, 87. 
o 
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