Bulletin No. 28. ^'- ^'- 1'-— ^-• 



U. S. DEPARTMENT OF AGRICULTURE, 



DIVISION OF VEGETABLE PHYSIOLOGY AND PATHOLOGY. 

 ALBERT F. WOODS, Chief. 



THE CULTURAL CHAK.ACTERS 



OF 



PSEUDOMONAS llYAflNTHl, Ps. CAMPESTRIS, Ps. PIlASEOLl AND 



PS.STEWARTI-FOUR ONE-FLAGELLATE YELLOW 



BACTERIA PARASITIC ON PLANTS. 



BY 



ERWIN F. SMITH, 

 Pathologist^ ill Charge of Laboratory of Plant Pathology. 



IssuKD August 6, 1901. 



WASHINGTON: 



G O V K R N .M E N T " P R I N T I N G OFFICE. 

 I 9 O I . 



