aturating timber depends on its thickness; 24 hours are required for each inch in thickness, for boards and small timbers.
The timbers, after saturation, should be placed under a shed or cover from the sun and rain, to dry gradually.
In about 14 days timber not exceeding 3 inches in thickness will be perfectly dry and seasoned, and fit for use. Large timbers will require a proportionate time, according to their thickness.
Some processes of similar import may be shortly stated.
In Bethel's process, creosote is employed and forced under heavy pressure into the pores of the wood. (1838.)
Robbins expels moisture by heat and then saturates with coal-tar, resin, or bituminous oils, at 325° Fah. (1865).
Blythe treats with steam combined with hydrocarbon vapor.
Burnett employs chloride of zinc in solution, under pressure. (1838.)
Boucherie used pyrolignite of iron. (1840.)
Payne, sulphate of iron. (1842.)
Margary, acetate or sulphate of copper. (1837.)