Past Experience on Future Expectation. 377 



whence we deduce as equation to the curve : 



/ ,/' \2-7±35/ .,' \22-3S36 



The origin is at 1*4308, and the range from — T09 to 

 + 22'05. Considering that the moments have not been 

 corrected, the fit is quite reasonable. 



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Diagram II. gives the curve set against the histogram of 

 the hypergeometrical series, and the following table gives the 



