744 A TEXT-BOOK OF BOTANY. 



an exceedingly slow one, yet as a matter of fact, by reason, of 

 some of the products being more extensively used, as in the case 

 of hops, it is one of the oldest agricultural industries in the United 

 States. The history of the cultivation of hops is very similar to 



FIG. 412. Cannabis sativa: Young plant grown from seed found in the drug Cannabis 



indica. 



the experience with other medicinal plants. For instance, it was 

 grown in Virginia with poor results, and in Vermont and Massa- 

 chusetts, where it was very successful. By virtue of the success 

 obtained in the New England States it was, in the early part of 

 the last century, introduced into New York State and later spread 



