A Bacterial Disease of Stone Fruits 



385 



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Fig. 5Q.— alberta peam hares inoculated with pure cultures of Bacterium Pruni. The growth from 

 a seven-day s-ol'l-slant Hiss-glucose culture was thoroughly mixed in one hundred cubic centimeters 

 of sterile wate<- and apphed to the leaves by dipping the fingers into the water and then rubbing the 

 leaf between the thumb and the fingers. Inoculations were made on July 16, 1912, and the photograph 

 was taken on August 28, 1912 f u i' 



a, Inocnlnte'l with a pure culture obtained from an apricot twig 



b, Innrulrited with a pure culture obtained fi om a nectarine twig 



c, Inocuhit'^d with a pure culture obtained from a peach twig 



d, Inoculated with a piire 'nilture obtained from a plum twig 



e, Check. Sterile water was applied to the leaf 



