1895.] The Bacterial Diseases of Plants : 803 
white variety). Bacteria introduced into a wound in the yel- 
low part of a leaf. Results: Feb. 13. In bloom. Two small 
streaks extending downward from the wound. Feb. 20. Leaf 
accidentally broken. It was put immediately after into alco- 
hol and subsequently hardened in absolute alcohol, where- 
upon microscopic preparations made and stained in the way 
already described, showed three vascular bundles attacked in 
varying degrees. Two of them evidently corresponded to the 
two little stripes on the leaf, while in the third bundle the dis- 
ease had not made enough progress to be visible on the sur- 
face of the green leaf. Norma (single red variety). Bacteria 
introduced into the green tips of three leaves. Results: Feb. 
13. In bloom. Ist leaf, nothing. 2nd leaf, a little spot two 
millimeters above the wound. 3rd leaf, a similar spot below 
the wound. Feb. 20. No change. Feb. 27. No change. 
March 6. Nochange. March 20. Second leaf broken; 3rd 
leaf show little spots 10 mm. below the wound, plant moved 
into the open air. March 27. No change. April 3. No 
change. Coeur blanc (single white variety). Bacteria intro- 
duced into a wound in the yellow part of a leaf. Results: 
Feb. 13. A stripe extending downward from the wound, 
4mm. Feb. 20. In bloom. No change. Feb. 27. Length 
of stripe 15 mm. March 6. Length of stripe 22 mm. 
March 13. Length of stripe 25 mm., and small spots 10 mm. 
lower. March 20. Length of stripe 27 mm., and small spots 
22 mm. lower. Plant put into the open air. March 27. 
Length of stripe 27 mm., and small spots 35 mm. lower. 
April 3. Length of stripe 67 mm. Crown Prince Charles of 
Sweden (double blue variety). Bacteria put into wounds at 
the green apex of two leaves. Results: Feb. 13. Nothing. 
Feb. 20. lst leaf, a downward stripe of 3} mm. from one of 
the wounds. 2nd leaf, nothing. Feb. 27. 1st leaf, length of 
stripe 15 mm., and small spots all around the wound. 2nd 
leaf, nothing. March 6. In bloom. Length of stripe 17 mm. 
March 13. Length of stripe 18 mm., and a small spot 4 mm. 
lower. March 20. Very little change. Plant put undera 
bell jar on a dish containing water. March 27. Length of 
stripe 22 mm. Bell jar removed because leaf began to turn 
