226 



PROCEEDINGS OF THE AMERICAN ACADEMY. 



TABLE I. 



Test of Galton's Law by the Statistics of Von Guaita. 

 B, black; B-W, black-white; G, gray; G-W, gray-white; IF, white. 



between observed and calculated will remain and even be accentuated if 

 we replace Galton's series with one of those suggested by Pearson. For 

 the result will be unchanged in Generation II, but the calculated num- 

 bers will in most cases diverge still more from the observed ones, in the 

 later generations, because Pearson attaches more weight to the remoter 

 ancestors than does Galton. 



It is evident, then, that some fundamental defect exists in the " law of 

 ancestral heredity," as stated by either Galton or Pearson. It fails in 

 the case just examined not only to account for the observed result, but 



