FOURTH REPoirr 



or TiiK 



MICHIGAN ACADEMY OF SCIENCE 



CONTAINING AN ACCOUNT OF THE ANNUAL MEETING 



HELD AT 



ANN ARBOR, MARCH 27, 28 AND 29, 1902 



ijbrarV 



NEW YORK 



Bi)TANlCAL 

 GARDBN 



PREPARED UNDER THE DIRECTION OF THE COUNCIL 



BY 



JAMES B. POLLOCK, Sc. D., 



SECRETARY 



BY AUTHORITY 



LANSING. MICH. 

 ROBERT SMITH PRINTING CO., STATE PRINTERS AND BINDERS 



1904 



