NINETEENTH ANNUAL REPORT 



OF 



THE MICHIGAN AaOEMfllF SCIENCE 



PREPARED UNDER THE DIRECTION 

 OF THE COUNCIL 



BV » 



G. H. COONS 



CHAIRMAN. BOARD OF EDITORS 



'ivatfUvn 



BY AUTHORITY 



LANSING, MICHIGAN 

 WVNKGOP HALLENBECK CRAWFORD CO,. STATE PRINTERS 



1017 



