Bulletin No. 28. V. v. v.—s2. 



U. S. DEPARTMENT OE AGRICULTURE. 



DIVISION OF VEGETABLE PHYSIOLOGY AND PATHOLOGY, 



ALBERT F. WOODS, Cliiel. 



mi CULTURAL CHARACTHRS 



OF 



PSEUDOMONAS HYACINTHI, Ps. CAMPESTRIS, Ps. PHASEOLl, AND 



PS.STEWARTI-FOUR ONE-FLAGELLATE YELLOW 



BACTERLi PARASITIC ON PLANTS. 



ERWIN F. SMITH, 

 Pathologist, in Charge of Laboratory of Plant Pathology. 



Issued August 6, 1901. 



WASHINGTON: 



G O V E R N iM K N T V \k I N T I N G O F V ICE. 

 I 9 O I . 



