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VII.J   DISCUSSION OF THE DATA OF STATURE.   133

TABLE OF DATA roa CALCULATING TABLES OF DISTRIBUTION OF STATURE AMONG THE KINSMEN OF PERSONS WHOSE STATURE IS KNOWN.

 From group of person of the same Stature, to their Kinsmen in various near degrees. Mean regression=w. f = p X ;V (1 - w2). Mid-parents to Sons 2/3 1.27 Brothers to Brothers 2/3 1-27 Fathers or Sons to Sons or Fathers 1/3 1.60 Uncles or Nephews to Nephews or Uncles   " "' 2/9 1-66 Practically Grandsons to Grandparents... 1/9 that of Popu Cousins to Cousins 2/27 lation, or """""" 1.7 inch.

On the other hand, if the Kinsmen were on the average no more like the Man than if they had been a group picked at random out of the general Population, then the Regression to P would be complete. The M of the Kinsmen, which is expressed by P + w(f D), would in that case become P, whatever might have been the value of D ; therefore w must= 0. We see by the preceding Table that as a general rule, Fathers or Sons should be held to be only one-half as near in blood as Brothers, and Uncles and Nephews to be one-third as near in blood as Brothers. Cousins are 42 times as remote as Fathers or as Sons, and 9 times as remote as Brothers. I do not extend the table further, because considerations would have to be taken into account that will be discussed in the next Section.