1907] 



STEVENS— CHRYSANTHEMUM RAY BLIGHT 



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Fig. 14 



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^ flowers in condition of disease; produced by inocula- 

 tion. T, The topmost head inoculated between the flowers with pycnidia from agar. 

 2, The second taDest head as in no. i. 4, Inoculated on scarified bark immediately 

 below the head. Dates as above. JJ, Inoculated no. 29 inside involucre, covered 

 by tube 24 hours; diseased December 8. S, Inoculated November 24 with agar on 

 scarified bark under wet cotton; diseased December 10.— Fig. 15. Showing method 

 of covering inoculated beads to supply humid atmosphere. 



