256 



BACTERIAL DISEASES OF PLANTS 





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FIG. 194. Potato shoot from same lot as Fig. 193 (Bacillus phytophthorus) 

 but from another plant and inoculated at the top. Hothouse temperature 

 ranging from 6oF., to 95F. Needle-pricks at A*, from a 2-day agar-streak 

 culture. Time, 43 hours. German organism (Appel I). 



