Bui. 909, U. S. Dept. 



PLATE IV. 



FiG. I. — Steaming Pits for Walnut Lumber. 



In the foreground the lumber is piled in one of the compartments preparatory to being covered 

 and steamed. The other compartments are filled with lumber, except at the extreme right in 

 the background, where the steamed lumber has just been lifted out. 



FIG. 2. 



Waste Walnut, Suitable for Manufacture into Small Articles, 

 but Generally Used for Fuel. 



