Vol. 4. No. 1. 



DETROIT, MICHIGAN, JULY, 1907. 



Price 10 Cents 



Entered as second-class matter April 27, 1907, at the Post O: troit. Michigan, under the act of Congress of March 3. 1879. 





')-. 



A Hardwood Forest, Showing Good Specimens of Yellow Poplar. 

 (Courtesy of Forestry and Irrigation.) 



