BOTANICAL SUPPLIES ' 441 



The Chicago Laboratory Supply and Scale Company, 39 West Randolph 



St., Chicago. 



Columbia School Supply Company, Indianapolis. 

 Conrad Slide and Projection Company, 4028 Jackson Blvd., Chicago. 

 Goder-Heimann Company, 87 East Lake St., Chicago. 

 E. Leitz, 30 East i8th St., New York. 



E. H. Sargent and Company, 125-127 West Lake St., Chicago. 

 Spencer Lens Company, Buffalo, New York. 



