Bul. 343, U. S. Dept. of Agriculture. PLATE XI. 
F—LAB,. 24 
Fic. 1.—WESTERN LARCH MECHANICAL PULP STEAMED (RUN No. 1). 
F—LAB. 25 
Fic. 2.—LODGEPOLE PINE (CALIFORNIA) MECHANICAL PULP STEAMED (RUN No. 1). 
