XI, A, 3 Heise: Tidal Variation of Springs and Deep Wells 127 



water begins to ooze out from the latter, and sample forwarded you is 

 taken from this at this time. Evidently the water (small spring) is not 

 brackish as was reported, and neither is it so when covered by the tide. 

 I must admit that * * * unusual weight has been given to tradition, 

 current in the town of Oslob * * *. 



There is, then, no reason to believe that the springs at the 

 present time are really fresh at high tide and brackish at low tide, 

 as had previously been reported. Perhaps the character of 

 the springs has changed in recent years ; perhaps the erroneous 

 idea that the two springs were different outlets for the same 

 water caused people to believe that the character of the water 

 changed with the tide. This latter explanation seems most 

 reasonable in view of the fact that at low tide the only available 

 water (samples 3 and 4, from large spring) was brackish, while 

 at high tide, the only accessible source (small spring) yields 

 fresh water (sample 2). 



