It is the purpose of the Division of Botany to collect statistics and 

 general information relating to all of the poisonous plants of the 

 United States, and so far as possible to examine into their chemical 

 and physiological properties and to discover their antidotes. With 

 this end in view, it is hoped that the heartiest cooperation will be 

 received from all those who are able to render assistance. 



Respectfully, Frederick Y. Coville, 



Botanist. 

 Hon. Ja^ees Wilson, 



Secretary of Agriculture. 



