The American 



MONTHLY 



/-- 



CONTAINING 



CONTRIBUTIONS TO BIOLOGY. 



Chas. W. Smiley, Publisher, Washington, D. C 

 Terms: For the United States, $2.00. ' For Great Britain. 8 Shillings. 



Vol. XV, No. i. 



JANUARY, 1894. 



No. 169. 





Highest Honors 



/^VAHDED TO 



Qhas. Marchand s 



Qlyc ozone 



BY 



Worlds Columbian Exposition, 



Chicago ,1893 



Laborator/ N- 28 Pn nee Stre^ 



New-^rK 



