98 



FROGHOrPER BLIGHT OF SUGAR-CANE. 



Figs. 21 and 22 show the rainfall on a single sugar estate during five 

 years free from blight and six years of widespread injury respectively. 

 Figs. 23 and 24 show on the other hnnd the rainfall in one year on three 

 estates free from blight and four estates where damage was more or less 

 severe. 



Fig. 21. 



Fig. 21. — Monthly rainfall on a Trinidad sugar estate during five years remark- 

 ably free from blight. Isote regularity of rainfall as compared with Fig. 22. 



