\.y\A.y<\yyy^^^'^^ .^-Zr\,'V.^tfXtA_-» 



ESSAYS UPON HEREDITY 



AND KINDRED 



BIOLOGICAL PROBLEMS 



BY 



Dr. august WEISMANN 



PROFESSOR IN THE UNIVERSITY OF FREIBURG IN BREISGAU 



VOLUME I 



EDITED BY 



EDWARD B. POULTON, M.A., F.R.S., F.L.S., F.G.S. 

 SELMAR SCHONLAND, Ph.D., Hon. M.A. Oxon. 



AND 



ARTHUR E. SHIPLEY, M.A., F.L.S. 



AUTHORISED TRANSLATION.— SECOND EDITION 



Oxford 



AT THE CLARENDON PRESS 



1891 



