EVOLUTION OF TO-DAY 



A SUMMARY 



OF THE THEORY OF EVOLUTION AS HELD BY SCIENTISTS 



AT THE PRESENT TIME, AND AN ACCOUNT OF THE 



PROGRESS MADE BY THE DISCUSSIONS 



AND INVESTIGATIONS OF 



A QUARTER OF A CENTURY 



H. W. CONN, PH.D. 



PROFESSOR OF BIOLOGY AT WESLEYAN UNIVERSITY 



NEW YORK & LONDON 



G. P. PUTNAM'S SONS 



8^1 luuchtrboclur |)rtss 



1896 



