MORTALITY OF FISHES^ WEST COAST OF FLORIDA. 23 



seems to be a quite impossible explanation. Some geological, perhaps 

 seismological explanation, such as Prof. Woodworth suggests, ap- 

 pears to be the most promising possibility. 



Aside from the continued recurrence of the phenomenon in the 

 past, we have no data on which to base a prediction as to future 

 recurrences. In the event of a verification of the seismological- 

 sedimentary hypothesis, a recurrence may be expected sometime. 

 In such an event oceanographic methods should be resorted to at 

 the first indication of the trouble; in the meantime a collection of 

 bottom and water samples over the region is desirable, and, if pos- 

 sible, gas bubbles, if present, should be collected from the mud by 

 appropriate apparatus. 



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