FOEEST TKEES OF TITE PACIFIC SLOPE. 287 



fine soft hairs; midveins and their branches also with very fine soft hairs. 

 They are shed gradually late in autumn. Acorns (fig. 128), dec]) chestnut 

 brown when ripe and exceedingly variable in form, are matured in one season. 



Fig. 127. — Quercua douglaaii. 



Wood, dark mottled brown, very dense, heavy, stiff, and brittle, very cross- 

 grained and difficult to split: sapwood, uncommonly thick. Large trunks are 

 often unsound. It is unfit for any ordinary commercial use, but is good for fuel, 

 for which it is extensively used. 



