^RWIN AND MODERN SCIENCE 



ESSAYS IN COMMEMORATION OF THE CENTENARY 



OF THE BIRTH OF CHARLES DARWIN AND OF THE 



FIFTIETH ANNIVERSARY OF THE PUBLICATION OF 



THE ORIGIN OF SPECIES 



EDITED, FOR THE CAMBRIDGE PHILOSOPHICAL SOCIETY 

 AND THE SYNDICS OF THE UNIVERSITY PRESS, 



BY 



A. C. SEWARD 



PROFESSOR OF BOTANY IN THE UNIVERSITY 

 HONORARY FELLOW OF EMMANUEL COLLEGE 



Cambridge : 



at the University Press 



1909 



