106 

 of the day in which such time vjus made. Both leurninti curvefi 

 are iri'etn.ilHr, but on the eleventh day that of the control 

 series passes permanently below that of the inbred, '"he curv- 

 es of relearnint: show that the inbreds had failed to benefit 

 by practice to so ^reat an extent as the normal control. 



