298 



BACTERIAL DISEASES OF PLANTS 



L 



1,^1, v;,, n,p mmI ■uul surface colonies of Bacterium phaseoli (Idaho isolation) 

 in a thin-sown +15 peptone-beef-agar poured plate. The smooth wet-shmmg, 

 yellow surface colonies show internal markings by direct transmitted light, ir'late 

 poured Aprd 11, 1919. Photographed April 18. X 10. Temperature 25 C. 



