FOREST SERVICE. 
HENRY S. GRAVES, Forester. 
ALBERT F. POTTER, Associate Forester. 
BRANCH OF RESEARCH. 
Earle H. Clapp, Assistant Forester in charge. 
Forest Products Laboratory. 
Carlile P. Wixslow, Director. 
Ovid M. Butler, Assistant Director. 
section of wood preservation. 
C. H. Teesdale, Engineer in Forest Products in charge. 
