IgIo] EAMES—THE BROAD RAY IN QUERCUS 167 
PLATE IX 
Fic. 7.—Quercus alba, sn transverse section of portion of stem, show- 
ing only rays of the linear ty 40. 
Fic. 8—Quercus virginiana, seedling; tangential view of portion of ve 
ray. X40. 
Fic. 9.—The same; portion of the large ray. X100 
Fic. 10.—Fossil oak of the gold gravels; eangetitial view of portion of the 
large ray. 100 
Fic. Ht Alwee incana; transverse section of wood. X40. 
Fic. 12.—The same; tangential section. 40. 
