. Bacteria in relation to plant diseases. Bacteriology; Plant diseases. Fig. 75.' pricks to the margin. The ninth day (2 ) the wilt involved most of the pricked side of the leaf (fig. 75) and 25 hours later all of the pricked leaf had wilted but the petiole, while the other leaves were normal. The eleventh day all the leaves had collapsed. The sixteenth day the vine had shriveled to the ground. (277.) Cucumis melo var. dudaim. This was a small plant. Many pricks were made on the blade of one leaf. The sixth day (10 a. m.) there was a slight wilt and change of color in the center of the pri
. Bacteria in relation to plant diseases. Bacteriology; Plant diseases. Fig. 75.' pricks to the margin. The ninth day (2 ) the wilt involved most of the pricked side of the leaf (fig. 75) and 25 hours later all of the pricked leaf had wilted but the petiole, while the other leaves were normal. The eleventh day all the leaves had collapsed. The sixteenth day the vine had shriveled to the ground. (277.) Cucumis melo var. dudaim. This was a small plant. Many pricks were made on the blade of one leaf. The sixth day (10 a. m.) there was a slight wilt and change of color in the center of the pricked area. Twenty-four hours later two-thirds of the pricked leaf was drooping. The eighth day the pricked leaf was turgid with the exception of a wedge-shaped area extending from the pricks to the tip and involving about one-eighth of the blade (fig. 75). The next afternoon there was only a little increase of the wilt, but 25 hours later all of the blade of the pricked leaf was wilted. The petiole was still turgid. The blades of the first three leaves up now showed a slight droop. The twelfth day all the leaves had collapsed and the sixteenth day the vine had shriveled to the earth. (278.) Benincasa cerifera. Many pricks were made on one of the leaf-blades of a small plant. On March 3 there were no signs, but 24 hours later there seemed to be a slight droop of the pricked portion. On March 5 there was no clear evi- dence of the wilt, but the following afternoon (end of the eighth day) there was change of color and distinct wilt. These signs were confined to an area of about i sq. cm. from the pricks to the tip, and the most of the pricked leaf was still normal. Twenty-five hours later the wilt was spreading slowly in the blade of the pricked leaf. The twelfth day six leaves besides the pricked one (part above it and part below) were wilted, some badly. Four days later the vine had shriveled to the ground. (279.) Watermelon (Citrullus vulgaris). This was a small plant. Many pri
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