Bulletin No. 1 3. 



U. S. DEPARTMENT OE AGRICULTURE. 



DIVISION OF FORESTRY. 



THE 



TIMBER PINES OF THE SOETIIERN UNITED STATES. 



By CHARLES MOHR, Ph. D. 



TOGETHER WITH 



A DISCUSSION OF THE STRUCTURE OF THEIR WOOD. 



By FILIBERT ROTH. 



PREPARED tINDER'THE DIRECTION OF B. E. KERNOW, CHIEF OF THE DIVISION OF FORESTRY. 



WASHINGTON: 



GOVERNMENT I'KINTING OFFICE. 

 l.SOG. 



