BONESET OR WHITE SNAKEROOT . 73 
Investigations that seem to contradict this conclusion are also 
cited, so that the connection of this plant to these diseases seems 
doubtful. 
Fic. 38.—Two species of heartsease or smartweed. 
The boneset of commerce is made trom LH. perfoliatum, which 
also is most often spoken of as a source of honey. The drug is 
well and widely known as a remedy. 
