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cal problems of such ap])arent simplicity, but even here, as I have tried to 

 show, the problem is really one of extreme complexity. If in any measure 

 this paper serves to indicate how utterly without significance much so- 

 called ecological study really is, and to stimulate to work along these lines 

 that is really analytic, that recognizes the fact that no ecological problem is 

 in reality simple and needs long-continued, oft-repeated observation and re- 

 flection before generalizations are made, it will have a distinct value quite 

 apart from the specific subject discussed. 



