PLANT BACTERIA, VOL. 3. 



PLATE 43. 



Shoot of Datura stramonium attacked by the Granville tobacco wilt. 



The infection took place through broken roots as the result of transplanting to a bed in which diseased tobacco plants had been buried. The 

 vessels of this plant, especially in the lower part of the stem, were swarming with the bacteria (see fig. 125J Photographed Aug. 1908. 



