ILLUSTRATIONS. 



PLATES. 



Page. 



PLATE I. What is left after the tanbark is removed Frontispiece. 



II. Typical tanbark oak country where, in the redwood belt, the tree 



attains its best development 8 



III. Fig. 1. Typical tanbark oak tree undergoing removal of first ring of 



bark. Fig. 2. Closer view of the operation 12 



IV. Fig. 1. Peeling 4-foot rings of bark from the felled tree. Fig. 2. 



Bunching the bark in small piles along the sled road 12 



V. Fig. 1. The skid ways to which the bunched bark is sledded, and 

 from which it is hauled to the railroad. Fig. 2. Hauling the bark 



in wagons from the skidways to the cars 12 



VI. Fig. 1. Machine and method used for testing small beams. Fig. 2. 

 Seasoning checks in the butt of a tanbark oak log exposed to the hot 



sun for six weeks 24 



VII. Fig. 1. Tanbark oak lumber for car construction. Fig. 2. Tan- 

 bark oak boards air-drying 24 



VIII. Fig. 1. Tanbark oak flooring, and the method of storing and sorting it. 



Fig. 2. Tanbark oak flooring ready for shipment from the mill. . 28 

 IX. Transverse section of a 2-year-old twig of tanbark oak, showing tannin 



in the pith, pith-rays, and bark 28 



X. Fig. 1. Transverse section of a 3-year-old twig of tanbark oak, show- 

 ing the distribution of tannin in the pith and pith -rays. Fig. 2. 



Longitudinal radial section of a 3-year-old twig 28 



4 



