From the cumulated record, consisting of Kurd's summary, augmented 

 by information supplied the writer by the Servicio Meteorologico Mexi- 

 cano, the percentage distribution of these cyclones, by months, can be 

 plotted. This is shown in Fig. 2 (left). It will be apparent that this 

 distribution is a bipeaked phenomenon, with one (minor) maximum 

 in June, and a second (greater) maximum in September. The September 

 maximum coincides temporally with the rainfall maximum for this area, 

 as is indicated by the climatic chart for Isla Maria Madre (lat. 21° 36' N. • 

 long. 106° 34' W— Fig. 2, centre). 



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