30 



Table 15. Consumption of Spruce, year ending June, 1912. 



DOUGLAS FIR. 

 (Pseudotsuga taxifolia). 



Over three and a third million feet of Douglas fir, often called Oregon pine, 

 is brought from the far western states to Pennsylvania to meet the demands 

 of three .industries: Ship building, planing mill products, and the manu- 

 facture of tanks and silos. It is primarily reported for structural work, be- 

 cause it possesses superior tensile strength, and, because it grows in large 

 sizes and timbers of large dimensions are readily obtainable. In this latter 

 respect it is the chief competitor of longleaf pine in the eastern and middle 

 states. It is also valuable as a decorative wood, owing to its attractive grain 

 and figure and the fact that it takes stain readily. This accounts for its 

 rapid growth in popularity in recent years for doors, moulding, wainscot- 

 ing, stairwork, and for other interior finish. 



