ORTHOGENETIC EVOLUTION 



IN PIGEONS 



POSTHUMOUS WORKS OI< CHARMS OTIS WHIIMAN 



PROFESSOR OF /(in|.()(.\ IN IHK c MVIHM1S MI . llh \.. i iK f UAIIIMK 



HKII.OIilCM. I.AIIDRMORV AT W'olis HOI 



I'DITKD HV 



OSCAR RIDDLE 



: CH MSOCUT1 ni. i UK CARNBGII i s>n I r 1 1, ,s OF WASHINGTON 



VOLUMK I 



PUBLISH KD I?V 



THE CARNKXUK INSTITUTION or \VASHI\tvro\ 



\\.\SHINGTON, I'M'* 



