Bul. 
343, U. S. Dept. of Agriculture. PLATE X. 
F—LAB. 22 
Fia. 1.—WESTERN HEMLOCK MECHANICAL PULP UNSTEAMED (RUN No. 1). 
F—LAB. 23 
Fic. 2.—LODGEPOLE PINE (CALIFORNIA) MECHANICAL PULP UNSTEAMED (RUN 
No. 2). 
