370 



Oll the Laim of Inheritcmce in ^Faii 



we shall havc sniall hcsit:iti"ii in a.ssiimiug tliat tho aiicf.str.il correlatioiis for 

 stature, span and forcann in man are closely aiike in valiie to those for his eye- 

 colour and for otlier character.s in horse or dog. We .shall thiis be able to extcnd 

 our theory, so iV-s to dediice froni nur data the rate at which selcction, natural 

 or artificial, woiild e.stablish .Stocks in man, and furthcr, th<' liiiiitaticms there are 

 to the coiicei)tii>ii of an iiuK'finitily active regression fullnwino on the snspen.sion 

 of sclection. 



It will bc foiinil that as far as the actnal valiies are concerned our Family 

 Records give values for heredity in man very sensibly larger than 5Fr Galton's 

 stature data, and niuch closer to those obtained froni his eye-colour data and for 

 coat-colour in horses and dogs. 



(iv) Size and Variability of Gharacters in the two Generations. 



I will fir.st consider whether thore i.s a sensible change in type betwcon the 

 older and youiiger geiieration of our own epoch. The problem is not so easy to 

 answer as it might ä prioi-i appear to some. We have thi' foUowing results : 



TABLE I. Alteration in Type. 



* We notc her« a Bccondary sexual diiTerence, the t-i'uu <.n iIm 

 Statute in luan, auJ abont •ö" Icsg tlinn the stature in womaii. 



iiliiiut 1" greater than the 



