ESSAYS ON EVOLUTION 



1889-1907 



BY 



EDWARD BAGNALL POULTON, D.Sc, M.A. 



Hon. LL.D. Princeton, F.R.S., V^P.L.S., F.Z.S., F.G.S., F.E.S. 



HOPE PROFESSOR OF ZOOLOGY IN THE UNIVERSITY OF OXFORD 



FELLOW OF JESUS COLLEGE, OXFORD 



MEMBRE HONORAIRE DE LA SOCIETE ENTOHOLOGIQUE DE BELGIQUE 



CORRESPONDING MEMBER OF THE ACADEMY OF SCIENCE, NEW YORK 



AND THE SOCIETY OF NATURAL HISTORY, BOSTON 



OXFORD 



AT THE CLARENDON PRESS 



1908 



6 



